Mhm. It took 20 years to devolve into soy UI, dump official distribution through apt (becoming the only reason to keep snapd on Ubuntu) and start shitting in user's downloads folder with temporary files.
This is not Thunderbird which I used to know and love.
At least teach it to delete its tmp folder in ~/Downloads on closure or something. It behaves like geezer which still tries to hit on female teenagers while shitting himself otherwise.