Save the current DB in HeidiSQL settings every time you switch to a DB, not when you close the app. When a crash happened (using MS Store v10.3) HeidiSQL can be restarted manually when the "Restart" ...

I was dropping some databases. After I already dropped some, HeidiSQL crashed when I selected another one. date/time : 2017-12-07, 23:38:55, 277ms computer name : foo user name : bar registered owner ...