Ever since the update to 19.02.49 in premium the software has been acting strange. Reboots every time I shut down, some videos won't display properly and most of the added plugins I purchased doesn't show unless I reactivate it. It's becoming a real hassle.
I have the “keeps rebooting” or reopening issue too. On a Windows 10 machine. Strangely, removing the external SuperDrive dvd writer seemed to cure it. I will have to remember to do that once I’ve finished burning dvds.