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CloseReview for FireTray by Firefox user 7200ff
Rated 5 out of 5 stars
ChrissWe comment saved me, this works with the new TB 60. The devs should probably update it or create a "new" add-on for people who need this.
https://github.com/Ximi1970/FireTray/releases
Just download the xpi and install. (save link as, extension manager -> install add-on from file)
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