Rated 1 out of 5 stars

Whereas Thunderbird is at Version 38.1 the add-on BiDi Mail UI, which is vital to those of us who send messages in Hebrew, Arabic, Aramaic, Farsi, Urdu and other right-to-left languages, is at Version 0.97 and has not changed in over three years. This add-on is painfully user-unfriendly and requires many manipulations to get messages to display correctly before and after they are sent. I find myself wasting five times as much time on composing a Hebrew message than on an English one. Worse than that, BiDi Mail UI causes already sent messages to display in the wrong direction.

This review is for a previous version of the add-on (0.9.7). 

Youre' reporting a compatibility bug. This is in the process of being resolved, please try the latest beta.