Developer reply by Itagaki Fumihiko
Rated 1 out of 5 stars
This add-on is now crashing and making Thunderbird take over 2 minutes to open in version 102.6.1. Are the developers even updating this add-on anymore?
This review is for a previous version of the add-on (2.2.6).I have not received any reports of such an issue, so your case seems rare. Please try to disable all other add-ons first to make sure they are not to blame. If the problem persists, please report it in Issues on GitHub.
https://github.com/protz/Manually-Sort-Folders/issues
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