Rated 5 out of 5 stars

I end up clicking the sorting buttons every single day, this extension is a life saver. I noticed almost immediately when it stopped working due to v78 but luckily you can download the latest pre-release from the author's Github. Thank you!

This review is for a previous version of the add-on (2.0). 

The version that is available here on addons.thunderbird.net is compatible with Thunderbird 78. Just make sure to update the addons in Thunderbird's addon manager after updating to Thunderbird 78.