Awakened POE Trade goes to desktop when pressing ctrl alt D

I haven't had this problem before this league and I can't figure out what is causing it. If pressing ctrl D it works well enough, but when pressing ctrl alt D or ctrl space it goes straight to desktop instead and I do not get a pop-up to check the item I want.

It doesn't crash anything, so that is fine, but POE is "reduced to the bar" to so I only have my desktop (and as mentioned I also don't do a search for the item I was trying get a price check for).

I suspect it may be a problem with windows itself and not with Awakened POE Trade, as that program seems to be setup correctly. However, my Windows Fu is not good enough for me to figure out what the problem is.

EDIT: Problem solved: In case someone discovers this thread later: NVIDIA decided to enable Fullscreen instead of Windowed Fullscreen. After changing back everything is working again.

Thank you, it helped me! :)