Buggy Rated 5 out of 5 stars

With the latest release on Feb 18, 2013, this addon is incorrectly grouping the threads. How to replicate:1. select an email except the latest received one.2. hit reply.3. the reply window will take the latest email instead of the selected email.
Reinstalled the version. The bug seems to have gone.

This review is for a previous version of the add-on (2.6.3). 

Can you make sure you are using version 2.6.3?