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Error in Latest version of Firefox disabled TabTree extension

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Latest version of FF (43.0, running on Windows 10) killed my tree tabs. All tabs are open, but I can't see the site name unless I hover over the link for about 3 seconds. Also, resizing the sidebar no longer works. Instead of resizing the sidebar, it moves the content of the current website I'm viewing. Closing all applications and rebooting has not helped. Please fix.

Latest version of FF (43.0, running on Windows 10) killed my tree tabs. All tabs are open, but I can't see the site name unless I hover over the link for about 3 seconds. Also, resizing the sidebar no longer works. Instead of resizing the sidebar, it moves the content of the current website I'm viewing. Closing all applications and rebooting has not helped. Please fix.

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Is that TabTree extension up-to-date? A new 1.4.2 version was released on Jan 3rd.

https://addons.mozilla.org/en-US/firefox/addon/tab-tree/

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I use the add-on Tree Style Tabs ver 0.16.2015122501, not Tab Tree. It's always worked perfectly in the past. I couldn't find a place on the add-on site to update the add-on. All add-ons have always automatically been updated with each new version of FF. Don't know why it didn't this time. The problems with FF do not appear to be limited to this add-on, but the whole browser experience. The webpage address in the address bar does not correspond with the content of the webpage. Example: I entered the link for the add-on page (both Tree Style Tabs and Tab Tree) and the correct add-on page was displayed, but the address bar pointed to the results of a Google search, my email or another website.

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