Steam [resolved] Smart App Control Blocks Tsw6

Update one day later: Now it works again. Weird.

The original post:
Hi there,
out of nowhere the Smart App Control in Windows 11 has started blocking the TrainSimWorld6.exe. Had no problems yesterday and nothing has changed as far as I can see. Anyone else having this problem?

Other Steam games are unaffected, and according to what I've read this has to do with a certification on the developers or publishers side. Have also verified the install and restarted the PC.