[Bug]: No option to add extra dictionaries for spellcheck

[Asalle]

Checks before filing an issue

• This issue doesn't reproduce on web browsers (such as in Chrome). If it does, issue reports go to the Mattermost Server repository.
• I have checked the issue tracker and have not found an issue that matches the one I'm filing. This should include closed issues.
• This issue is not a troubleshooting question. Troubleshooting questions go here: https://forum.mattermost.com/c/trouble-shoot/16.
• This issue is not a feature request. You can request features and make product suggestions here: https://mattermost.com/suggestions/.
• This issue reproduces on the most recent stable version, or the most recent prerelease version of the Mattermost Desktop App.
• I have read the contribution guidelines.

Mattermost Desktop Version

5.12.1

Operating System

Ubuntu 24.10 x64

Mattermost Server Version

10.5.3

Steps to reproduce

1. Write a word not in English
2. Spellcheck highlights the word with red wiggly underscore
3. Click on the word with right click

OR

1. Go to settings -> App settings
2. Open dialog to add dictionaries for spellcheck

Expected behavior

Can add additional dictionaries for spellcheck

Observed behavior

Cannot add additional dictionaries for spellcheck

Log Output

[2025-06-15 18:47:31.233] [error] Logger Log level set to: info
[2025-06-15 18:47:31.358] [info]  [Config] Migrating config items successfully.
[2025-06-15 18:47:31.371] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-15 18:47:31.640] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-15 18:47:31.641] [error] [MainWindow] Error: ENOENT: no such file or directory, open '/home/asaly12/snap/mattermost-desktop/789/.config/Mattermost/bounds-info.json'
    at Object.readFileSync (node:fs:442:20)
    at t.readFileSync (node:electron/js2c/node_init:2:10960)
    at _.getSavedWindowState (/snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/index.js:2:972378)
    at _.init (/snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/index.js:2:969137)
    at _.show (/snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/index.js:2:971132)
    at /snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/index.js:2:215238
    at br (/snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/index.js:2:215985)
[2025-06-15 18:47:31.702] [info]  [ServerDropdownView] init
[2025-06-15 18:47:31.770] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-15 18:47:31.770] [warn]  [i18nManager] Failed to set new language US
[2025-06-15 18:47:31.997] [error] [App.Utils] clearAppCache TypeError: Object has been destroyed
[2025-06-15 18:47:32.001] [info]  [App.Config] config.autostart has been configured: true
[2025-06-15 18:47:32.154] [info]  [ModalView] [welcomeScreen] preloading with /snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/internalAPI.js
[2025-06-15 18:47:41.312] [info]  [App.Config] config.autostart has been configured: true
[2025-06-15 18:47:41.313] [info]  [App.Config] config.autostart has been configured: true
[2025-06-15 18:47:41.353] [info]  [App.Config] config.autostart has been configured: true
[2025-06-15 18:47:43.845] [info]  [App.Config] config.autostart has been configured: true
[2025-06-15 18:47:44.963] [error] [WebContentsEventM...] [renderer] Uncaught (in promise) Error: Not authorized

[2025-06-15 23:04:36.106] [error] [WebContentsEventM...] [renderer] TypeError: Failed to fetch
[2025-06-15 23:04:36.109] [error] [WebContentsEventM...] [renderer] Uncaught (in promise) TypeError: Failed to fetch
[2025-06-17 10:41:06.073] [error] Logger Log level set to: info
[2025-06-17 10:41:06.251] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-17 10:41:06.871] [info]  [App.Config] config.autostart has been configured: true
[2025-06-17 10:41:06.928] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-17 10:41:07.010] [info]  [ServerDropdownView] init
[2025-06-17 10:41:07.095] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-17 10:41:07.096] [warn]  [i18nManager] Failed to set new language US
[2025-06-17 10:41:08.001] [info]  [App.Config] config.autostart has been configured: true
[2025-06-17 10:41:09.053] [info]  [App.Config] config.autostart has been configured: true
[2025-06-17 19:29:43.413] [error] Logger Log level set to: info
[2025-06-17 19:29:43.617] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-17 19:29:44.249] [info]  [App.Config] config.autostart has been configured: true
[2025-06-17 19:29:44.308] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-17 19:29:44.388] [info]  [ServerDropdownView] init
[2025-06-17 19:29:44.461] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-17 19:29:44.462] [warn]  [i18nManager] Failed to set new language US
[2025-06-17 19:29:44.899] [warn]  [App.Utils] Could not get server info for canonical Error: net::ERR_INTERNET_DISCONNECTED
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:123472)
    at SimpleURLLoaderWrapper.emit (node:events:518:28)
[2025-06-17 19:29:44.961] [info]  [App.Config] config.autostart has been configured: true
[2025-06-17 19:29:45.060] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-17 19:29:50.114] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-17 19:29:55.180] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-17 19:30:00.260] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-17 19:30:05.330] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] Couldn't esviewlish a connection with https://chat.canonical.com/, will continue to retry in the background Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/'
    at rejectAndCleanup (node:electron/js2c/browser_init:2:78839)
    at WebContents.finishListener (node:electron/js2c/browser_init:2:79001)
    at WebContents.emit (node:events:530:35)
[2025-06-17 19:31:27.200] [info]  [App.Config] config.autostart has been configured: true
[2025-06-19 16:12:37.503] [error] Logger Log level set to: info
[2025-06-19 16:12:37.683] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-19 16:12:38.266] [info]  [App.Config] config.autostart has been configured: true
[2025-06-19 16:12:38.323] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-19 16:12:38.418] [info]  [ServerDropdownView] init
[2025-06-19 16:12:38.498] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-19 16:12:38.498] [warn]  [i18nManager] Failed to set new language US
[2025-06-19 16:12:38.936] [warn]  [App.Utils] Could not get server info for canonical Error: net::ERR_INTERNET_DISCONNECTED
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:123472)
    at SimpleURLLoaderWrapper.emit (node:events:518:28)
[2025-06-19 16:12:38.986] [info]  [App.Config] config.autostart has been configured: true
[2025-06-19 16:12:39.083] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-19 16:12:44.135] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-20 14:01:09.387] [error] Logger Log level set to: info
[2025-06-20 14:01:09.561] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-20 14:01:10.177] [info]  [App.Config] config.autostart has been configured: true
[2025-06-20 14:01:10.231] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-20 14:01:10.311] [info]  [ServerDropdownView] init
[2025-06-20 14:01:10.382] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-20 14:01:10.383] [warn]  [i18nManager] Failed to set new language US
[2025-06-20 14:01:10.816] [warn]  [App.Utils] Could not get server info for canonical Error: net::ERR_INTERNET_DISCONNECTED
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:123472)
    at SimpleURLLoaderWrapper.emit (node:events:518:28)
[2025-06-20 14:01:10.883] [info]  [App.Config] config.autostart has been configured: true
[2025-06-20 14:01:10.977] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-20 14:01:16.038] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-20 14:01:21.104] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-20 14:01:26.171] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-06-20 14:01:31.231] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] Couldn't esviewlish a connection with https://chat.canonical.com/, will continue to retry in the background Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/'
    at rejectAndCleanup (node:electron/js2c/browser_init:2:78839)
    at WebContents.finishListener (node:electron/js2c/browser_init:2:79001)
    at WebContents.emit (node:events:530:35)
[2025-06-20 14:03:28.296] [info]  [App.Config] config.autostart has been configured: true
[2025-06-20 14:03:29.830] [error] [WebContentsEventM...] [renderer] Uncaught (in promise) Error: Request has been terminated
Possible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.
[2025-06-21 10:24:52.050] [error] [WebContentsEventM...] [renderer] TypeError: Failed to fetch
[2025-06-21 10:24:52.056] [error] [WebContentsEventM...] [renderer] Uncaught (in promise) TypeError: Failed to fetch
[2025-06-22 14:58:18.840] [error] Logger Log level set to: info
[2025-06-22 14:58:19.024] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-22 14:58:19.586] [info]  [App.Config] config.autostart has been configured: true
[2025-06-22 14:58:19.704] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-22 14:58:20.090] [info]  [ServerDropdownView] init
[2025-06-22 14:58:20.418] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-22 14:58:20.422] [warn]  [i18nManager] Failed to set new language US
[2025-06-22 14:58:42.651] [info]  [App.Config] config.autostart has been configured: true
[2025-06-22 14:58:43.251] [info]  [App.Config] config.autostart has been configured: true
[2025-06-23 08:13:18.404] [error] Logger Log level set to: info
[2025-06-23 08:13:18.575] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-06-23 08:13:19.162] [info]  [App.Config] config.autostart has been configured: true
[2025-06-23 08:13:19.221] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-06-23 08:13:19.303] [info]  [ServerDropdownView] init
[2025-06-23 08:13:19.372] [warn]  [i18nManager] Failed to set new language en-US
[2025-06-23 08:13:19.372] [warn]  [i18nManager] Failed to set new language US
[2025-06-23 08:13:20.213] [info]  [App.Config] config.autostart has been configured: true
[2025-06-23 08:13:20.858] [info]  [App.Config] config.autostart has been configured: true
[2025-06-30 21:03:30.129] [warn]  [WebContentsEventM...] [renderer] Event scheduled_posts_menu_opened doesn't have a category
[2025-06-30 21:03:30.143] [warn]  [WebContentsEventM...] [renderer] Event scheduled_posts_menu_opened has no SKUs attached
[2025-06-30 21:03:45.449] [warn]  [WebContentsEventM...] [renderer] Event create_scheduled_post doesn't have a category
[2025-06-30 21:03:45.449] [warn]  [WebContentsEventM...] [renderer] Event create_scheduled_post has no SKUs attached
[2025-06-30 21:56:26.764] [warn]  [WebContentsEventM...] [renderer] Event scheduled_posts_menu_opened doesn't have a category
[2025-06-30 21:56:26.768] [warn]  [WebContentsEventM...] [renderer] Event scheduled_posts_menu_opened has no SKUs attached
[2025-06-30 21:56:40.868] [warn]  [WebContentsEventM...] [renderer] Event create_scheduled_post doesn't have a category
[2025-06-30 21:56:40.868] [warn]  [WebContentsEventM...] [renderer] Event create_scheduled_post has no SKUs attached
[2025-07-02 16:56:23.549] [error] Logger Log level set to: info
[2025-07-02 16:56:23.737] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-07-02 16:56:24.382] [info]  [App.Config] config.autostart has been configured: true
[2025-07-02 16:56:24.587] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-07-02 16:56:24.891] [info]  [ServerDropdownView] init
[2025-07-02 16:56:25.181] [warn]  [i18nManager] Failed to set new language en-US
[2025-07-02 16:56:25.183] [warn]  [i18nManager] Failed to set new language US
[2025-07-02 16:56:25.732] [warn]  [App.Utils] Could not get server info for canonical Error: net::ERR_INTERNET_DISCONNECTED
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:123472)
    at SimpleURLLoaderWrapper.emit (node:events:518:28)
[2025-07-02 16:56:25.793] [info]  [App.Config] config.autostart has been configured: true
[2025-07-02 16:56:25.891] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-07-02 16:56:30.963] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-07-02 16:56:36.033] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-07-02 16:56:41.080] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] failed loading https://chat.canonical.com/: Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/', retrying in 5 seconds
[2025-07-02 16:56:46.147] [info]  [MattermostWebCont...] [canonical] [TAB_MESSAGING] Couldn't esviewlish a connection with https://chat.canonical.com/, will continue to retry in the background Error: ERR_INTERNET_DISCONNECTED (-106) loading 'https://chat.canonical.com/'
    at rejectAndCleanup (node:electron/js2c/browser_init:2:78839)
    at WebContents.finishListener (node:electron/js2c/browser_init:2:79001)
    at WebContents.emit (node:events:530:35)
[2025-07-02 16:58:23.820] [info]  [App.Config] config.autostart has been configured: true
[2025-07-02 17:17:21.445] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 09:00:11.587] [error] Logger Log level set to: info
[2025-07-03 09:00:11.772] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-07-03 09:00:12.366] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 09:00:12.431] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-07-03 09:00:12.514] [info]  [ServerDropdownView] init
[2025-07-03 09:00:12.583] [warn]  [i18nManager] Failed to set new language en-US
[2025-07-03 09:00:12.584] [warn]  [i18nManager] Failed to set new language US
[2025-07-03 09:00:13.536] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 09:00:14.182] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 12:06:24.257] [info]  [ModalView] [settingsModal] preloading with /snap/mattermost-desktop/789/opt/Mattermost/resources/app.asar/internalAPI.js
[2025-07-03 12:06:31.332] [error] [WebContentsEventM...] [renderer] TypeError: Cannot read properties of undefined (reading 'flashWindow')
[2025-07-03 12:06:31.334] [error] [WebContentsEventM...] [renderer] Uncaught TypeError: Cannot read properties of undefined (reading 'flashWindow')
[2025-07-03 12:06:46.675] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 12:10:48.044] [error] Logger Log level set to: info
[2025-07-03 12:10:48.174] [warn]  [App.Initialize] Current working directory is /home/asaly12, changing into /snap/mattermost-desktop/789/opt/Mattermost
[2025-07-03 12:10:48.448] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 12:10:48.542] [info]  [App.Initialize] Autoupgrade disabled: false
[2025-07-03 12:10:48.690] [info]  [ServerDropdownView] init
[2025-07-03 12:10:48.756] [warn]  [i18nManager] Failed to set new language en-US
[2025-07-03 12:10:48.757] [warn]  [i18nManager] Failed to set new language US
[2025-07-03 12:10:49.274] [info]  [App.Config] config.autostart has been configured: true
[2025-07-03 12:10:49.895] [info]  [App.Config] config.autostart has been configured: true

Additional Information

Used with the most recent snap

channels:
  latest/stable:    5.12.1 2025-05-30 (789) 125MB -
  latest/candidate: 5.12.1 2025-05-30 (789) 125MB -
  latest/beta:      ↑                             
  latest/edge:      ↑                             
installed:          5.12.1            (789) 125MB -

[devinbinnie]

@Asalle Are you looking to spell check in multiple languages or are you looking to add multiple custom dictionary URLs? We do support the former, shown below, but not the latter: