Troubleshooting extensions and themes

• https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Troubleshooting plugins

• https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins

Check and tell if its working.

(suddenly) it is "Active Stop Button" Extension bug

When you find the Faulty extensions using the first link in my previous post, Remove/Uninstall those add-ons

Uninstall an Add-on

• https://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on

Check and tell if its working.

disabling extension fixes the issue

So the general approach was to disable all extensions and check whether the bug got lost. If it is, then enable 1/2 part of disabled extensions (in a cycle) until that bug occurs.

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