Legacy role conversation fields becomes empty after save

[Arsync]

Fields like 'Console display name' and 'Rest client URI (required)' is filled, but legacy conversations empty.
Keycloak (in docker) version 20.0.2, 21.0.2

I've missed something in keycloak configuration or docker image settings?

[daniel-frak]

Hi! Sorry for getting to this so late.

It looks like there is indeed a bug, though the bug appears to be in Keycloak itself.

I have confirmed locally that saving a single value like this:

Ends up with the value seemingly gone:

However, it seems that the value is actually saved, if you look at the response JSON (the ROLE_MAP property):

Saving multiple values at once seems to show them correctly:

Therefore, it seems to be a cosmetic problem with Keycloak's UI.

Perhaps it's connected to the issue below:
keycloak/keycloak#24927

The correct approach would be to create an issue in the Keycloak repository (and describe the deserialization issues of MULTIVALUED_STRING_TYPE in Keycloak UI). Unfortunately, I don't have the time to investigate this further at the moment :(

As a silver lining, a problem like that is bound to be noticed by many people, so perhaps the issue will go away in Keycloak 25?