Rated 5 out of 5 stars

<i>Update:</i>
The extension isn't broken after all. It appeared to be an other extension which makes reply-all behave incorrectly... Granted this on the 5 stars it deserves...

<i>Original review:</i>
I've been a users of this plugin for a long time and would have rated it 5 stars (sorry for not effectively doing that). But as of version 13 of Thunderbird (running on Ubuntu), reply-all is broken...

Đánh giá này là cho một phiên bản trước của tiện ích (2.0.6). 

Could you please try "restore default set" and then add the reply all button again. I am not sure but this might be some upgrade related problem.