As the title says, after exiting the game, the game window closes, but Steam still registers it as running; In the recently played games part of the Steam task-bar context menu, Grim Dawn’s name is green showing that it’s running, and if I close Steam, Steam has to wait for Grim Dawn to close before it can shut down.
At a glance, GD it didn’t appear in the task manager, though I’ll double check that next time it happens. Closing steam seems to be the only way to close it properly.
You can also check in Process Explorer (a program that you can download) because I had times when Grim Dawn process was not in Task Manager but still in Process Explorer which caused issues for me (not being able to launch the game, mainly when using Grim Internals though).