FYI -
Good Gravy!!!
If you modified the userChrome.css file (in the user AppData\Roaming\Mozilla\Firefox\Profiles directory) to get tabs back on top of the site viewing window instead of the very top of the Firefox window you need to remove that "fix". You'll have to restart Firefox.
Otherwise the list of tabs you have open are NOT visible in Firefox v.89! Two tabs may show up at the bottom of the site viewing window, covering a portion of the website.
Spent a couple of hours trying to rectify this!!!
If you did make the mod to the userChrome.css file and forget what it was, I have a link that will explain the old fix so you can remove the one line. I'll post the link if someone needs it.
If you didn't make the mod, you'll have no problem with v.89.
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