Day One FixesKnown issueFixUpdated · 4 replies on Steam
Ravager: Minor Issue of Game Not Shutting Down (Workarounds)
Short answer
Suggested fix (unconfirmed): Open Task Manager to end the game's lingering background process, or restart the Steam client entirely.
The problem
As the title says its a minor issue closing steam out fixes but some times when you close the game it fools steam into thinking it is in fact still running an active an trying to close from the steam interface has no effect so far only way to close it is to close steam in general
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Source: original Steam Community discussion. Quotes are shortened; all credit goes to the posters.