UI to puke on
After an automatic update Firefox had a terrible surprise for me. A beyond ugly user interface. And NO WAY to fix this with a simple toggle switch back to classic mode. There are theme's available, but still it looks unusable to me. This kind of updates should be beyond Mozilla, maybe don't hire former Apple employees, the esthetics don't have to be " slick and modern"
So after a long fight with almost losing my plugins, saved tabs (100+) etc.. I downgraded successfully to 88.
Step 1 (Secure your profile) Open menu, Click Help, Click "More Troubleshooting Information" Go to the line which says, "Profile Folder" Hit open folder
Pay extra attention during these steps: Now you are browsing in your active profile. If you did this after upgrading to 89 version. Make a back-up copy of this whole folder!! Rename it back up.
Open the file "Compatibility.ini" with a text editor, and empty it. Save and close.
Download and install the previous version of Firefox, After installing don't forget to disable automatic updates.
If the profile isn't loaded, browse to "about:profiles" and find and select your profile to get al your plugins, tabs, favs, etc. back.
Its a terrible shame i need to write this down for people to avoid the frustration of a terrible update
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