What happens to me is that I open the game and I get a notification of discord for example, but magically the Halo disappears from the taskbar I try with alt + tab if I try to open it and nothing and steam detects that it is running until the task manager He confirms it to me and this only happens to me for some strange reason when I play the Halo Combat Evolved campaign, sorry for my bad English, I don’t know much so I use a translator since I speak French