Rated 4 out of 5 stars

Still works great. However, after the latest update today, whenever i try to do a reply, I cannot highlight and edit the contents of the quoted email reply. Works okay with forwarding.

This review is for a previous version of the add-on (1.57.0). 

I'm sorry for the inconvenience. And thank you for your bug-report. It was very helpful.

I fix this issue in the new version
I upload this new version to AMO ( addons.mozilla.org ) now.

The approval process by AMO will take a few days.
If you would like to use this version now, please download from here : https://github.com/isshiki/ReFwdFormatter/blob/master/bin/refwdformatter-
and reinstall the add-on from this .xpi file manually.