Steam Endless Loading Screen When Returning To Main Menu

Hey,
I’ve been experiencing a strange issue for the past few days. It suddenly appeared out of nowhere,before that, everything was working fine.

The game starts normally into any scenario or timetable, and I can play and complete them without any issues. However, whenever I try to return to the main menu afterwards, the game gets stuck in an endless loading screen.

No matter what I do,as soon as I press “Return to Main Menu,” I see the TSW front cover with the small loading circle, but it never progresses. I even left it loading for 15 minutes, but it was still stuck.

I do use some mods, but I have disabled all of them, and the issue still persists.

If anyone could help me, Id be really grateful! At the moment, I have to restart the entire game after every run, which is very inconvenient.

Thanks a lot in advance! : )