Game never closes properly (still running in background)

[Soragami]

Whenever I quit the game the "normal" way (esc -> quit game), it doesn't close properly and still runs in the background. The task manager shows that it's still using system resources.

This also causes an error when I start it up again, saying that the game is still running (even though I just closed it -.-).

 

The only way to actually close the game is to forcefully shut it down (e.g. via task manager), or if it crashes.

 

It has been this way for a few months now, maybe even over a year, and I'm really hoping this gets fixed soon, as it shouldn't be that hard to close an application.