Whenever I stop the game either from in game menu or from steam stop button steam will not register that the game closes.
I only have this issue with windrose out of 300 games.
Once this happens I can sit 15-30m waiting for it to shut down. I fell asleep yesterday to it and it was still loading a few hours later.
I fix it by forcing steam to shut down then when I open it, it will be ready to launch again