Certain components cause issues when used in web extensions

[andrewkfiedler]

For the most part components work with no issues, but certain components cause issues when used. In particular, I noticed Dialogs and Popper type components. After use, they cause the page to start throwing this error.

Error: Permission denied to access property "apply"

• The issue is present in the latest release.
• I have searched the issues of this repository and believe that this is not a duplicate.

Current Behavior 😯

The page works normally until a dialog or popper component is used.

Then it starts to interfere with normal scripts on the page, throwing things like:

Error: Permission denied to access property "apply"

Expected Behavior 🤔

Honestly, I'm okay if web extensions are not a supported use case for MUI. I'm more wondering if someone has insight into why these components cause issues. For now I'm rolling a custom modal / popup that doesn't cause issues.

Steps to Reproduce 🕹

Hard to include steps on this. Basically you need to have a web extension on a page, open a dialog in the extension, then use the page and see the error.

Context 🔦

Using MUI in a web extension.

Your Environment 🌎

Firefox

Tech	Version
Material-UI	v4.9.5
React	Experimental (concurrent mode)
Browser	Firefox 74

[eps1lon]

Hard to include steps on this. Basically you need to have a web extension on a page, open a dialog in the extension, then use the page and see the error.

We need a complete repro for this. It's the first time I've heard about issues in web extensions so we don't have the bandwidth to debug these one-off use cases without some help from contributors.

[andrewkfiedler]

I'll try and figure out a way to reproduce it without extensions. It may require installation of a web extension though. Would that be okay for a reproduction?

Basically I think I could make a code sandbox, but in addition one would have to install an extension.

[oliviertassinari]

@andrewkfiedler This sounds like a violation of a security constraint of Firefox. Let us know if you find the origin of the problem. Closing until then.

[andrewkfiedler]

👍 Sounds good. I'll do some more digging.