Personally i would start within Firefox itself as that is where your issues are displaying it has some pretty good tools to debug any issues you may be experiencing.
- Make sure you are on the latest update
- Type about:support in the URL bar.
> click Refresh Firefox
> Diagnose Issues by clicking Troubleshoot mode
Disable/Enable Hardware Acceleration which can cause all sorts of UX/UI problems which is what you are experiencing try doing activities that you know break functionality while this feature is turned both on and off and see if you can replicate the issue while it is disabled or enabled.
if Firefox is actually crashing then you should also be looking in Event viewer as it may lead you to other avenues that could be causing problems externally.
Firefox's excerpt on troubleshooting https://support.mozi...refox-a-tune-up
if you think you have found anything substantial or fixed your problem you can inform here https://bugzilla.mozilla.org/home as these sorts of problems are can be platform Agnostic for example i am using FF right now to type this message but i am not experiencing the same issues you are with FF so in turn any finding people relay will help others that have the same problems. You can also try searching https://bugzilla.mozilla.org/home for your issue and it might be something that is experienced by someone else and they may have the fix.
Edited by Chipkid, 08 October 2022 - 01:46 PM.