Can confirm this is an issue occuring on every OS and still ongoing! They really need to fix this... it happens on steam or nexon launcher..
Proper steps to reproduce the issue:
Go ingame ( Play for a while..) and then press alt+ f4 to close the game ( or even use the button) and the game process won't shutdown. it'll just keep hanging as a " sleeping " process and use memory.
this issue is rather annoying because we cannot reopen the game when this happen..
It's the same thing with the random crashes occuring when on login screen or ingame..