addCustomTab not working with sfc or vnode type under Firefox

[ggodlewski]

Firefox 140.0esr using debian
Vue DevTools 7.7.7

I added first example from https://devtools.vuejs.org/plugins/api#addcustomtab into my app.

It does not work in Firefox or Librewolf. In the extension's debug console I'm getting:

EvalError: call to Function() blocked by CSP

...

Content-Security-Policy: The page’s settings blocked a JavaScript eval (script-src) from being executed because it violates the following directive: “script-src 'self'” (Missing 'unsafe-eval') [chunk-JBFUC7OX.js:530:7012](moz-extension://a836d2fe-7325-4b3b-a32d-ec802212510c/dist/chunk-JBFUC7OX.js)

SFC works fine when running as vite plugin or standalone app.

I also tried:

import Count from './count.vue';

addCustomTab({
  name: 'plugin-count2',
  title: 'Plugin Count2',
  icon: 'baseline-exposure-plus-1',
  view: {
    type: 'vnode',
    vnode: Count,
  },
  category: 'app',
})

No error, empty tab.
VNode type does not work at all in FF, vite or standalone app.