Native QFileDialog causing crashes after opening/executing

When using QFileDialog, the program will crash in 2 minutes since first call of open/exec method. It does not matter if dialog is created on the stack or by calling "new".  

The crash occurs only on 32-bit architecture in debug mode on Windows 7 Pro. Win10 does not seem to have this issue. Release mode as well as 64-bit are unaffected. Program won't crash if we set dialog option QFileDialog:: DontUseNativeDialog. 

I suspected some background service screwing things up, until release mode worked fine. Now I have no suspects as why would this happen. 

All I can offer is the minimalistic code I was able to reproduce the error with. Also it only happens from inside the visual studio. I tried to deploy the debug version so it is standalone and so far I have not encountered any crash.

stack overflow link: https://stackoverflow.com/questions/55569734/after-using-qfiledialog-program-crashes-after-few-seconds

EDIT: Program crashes even when compiling in Release mode, however it does not crash when deployed. It has to be something with visual studio.