PoE2 / Steam fails to detect installed game

After a regular restart of my PC, steam randomly no longer recognizes PoE2 as installed, even though the folder is intact and all the files are there.

This is happening to me the 3rd time this month.

Only solution seems to be deleting the folder and downloading 90 gigs of game data every time. It is extremely frustrating, please tell me how to fix it.

Thanks.

I have the same issue