Vue.js not detected

[phlegx]

Version

5.0.0-beta.3

Browser and OS info

Firefox 63.0.3 (64-bit)

Steps to reproduce

The add-on vue-devtools is not activated. It shows "Vue.js not detected".

I have created a Rails Vue app with a simple example. The app works fine. The only think the console shows is: "Content Security Policy: The page’s settings blocked the loading of a resource at eval (“script-src”)."
Can this error be the problem?

Vue.config.devtools is set to true. And I'm running in development mode.

On this website "https://new-issue.vuejs.org" the add-on works!

What is expected?

vue-devtools should detect the Vue app.

What is actually happening?

vue-devtools does not detect Vue.

[TheCycoONE]

I think this is a duplicate of #616 (they changed from unsafe-inline to unsafe-eval)

[Akryum]

Duplicate of #616