"game running" even though it isnt

Oke doke. So. Every time I play the game and close it, it still says "running" even though it's closed.

I've looked in task manager just to make sure nothing was still running, but, alas, Nothing. The only way to fix it is to 

A) restart steam and re-open it (quite a hassle)

B)restart my computer(even more hassle, also technically the same as the last one)

so how do I fix this?