I have long used multirow bookmark toolbar extension to give me 4 rows of bookmarks across the top of my Firefox window on Windows 10. After updating to this latest version, the extension is gone. Any mention of it in about:config is gone. I don't know if it ever was mentioned in userChrome.css but it's not there either. It's as though it never existed. WTH? Can anyone suggest how to get a multirow display of my toolbar bookmarks? Thanks in advance. On a related rant: This is why I hate upgrading Firefox. Something useful and common sense always breaks. I'm going to open a separate question to figure out how to get the cursor focus back into the Google search box when I open a new tab using Google as the home page. None of the previous solutions is working with this version. This break in basic functionality has happened after many different upgrades of Firefox and I am frankly sick of fixing the same ridiculous problem over and over.