addCustomTab not working with sfc or vnode type under Firefox

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.

Start with the addCustomTab example in the documented plugins API and reproduce it in Firefox or Librewolf using the reported extension console error in chunk-JBFUC7OX.js. Compare the SFC and vnode cases across the extension, Vite plugin, and standalone app; done means both custom-tab views render without the CSP error or an empty tab.