Has anyone figured out a fix for this?? I’m having the exact same problem 3 years after this thread was started. I don’t own Photoshop. The only apps I’m tabbing between are windows folders, chrome, and visual studio. It seems like a deadlock because no CPU is being used by UE4 editor when it happens and no amount of waiting ever brings it back - killing with taskmanager is the only solution.
Surely after 3 years this would be fixed??!!