Rated 4 out of 5 stars
I love this add-on, but sadly it doesn't work anymore in version 68+. So hopefully this one will be made compatible with the latest version!
Rated 5 out of 5 stars
Does what it says, even on the latest version of TB.
I had it removed after upgrade to TB 45.0, since it states on the Add-on page that it is only working with Thunderbird 17.0 - 19.*. And I forgot what this add-on was for...
However I was missing it and got irritated by needing to close both windows when I replied to an mail.
So after searching for a solution I ran into it again, so I installed it back. It works as I was used too and it solved my problem (again).
So I love it!!
Glad to know it is still working, as I have not touch this module for mor than 3 years, I'm quite happy.