sorry you are having these issues lets try to fix it. try these following step and maybe this will fix your issue. -Open steam; -Click on friends & chat on the bottom right; -Click on the settings icon on the top of the new window; -Click on notifications and disable the following setting: [i]Flash window when i recieve a chat message;[/i] and the final step go to chat options and disable the setting: [u]open a new window for new chats (rather than a tab)[/u] If this didnt solve your issue try to go to destiny 2 and put your window mode in [i]Windowed fullscreen.[/i] i must let you know that this is a steam issue and not a destiny issue seen that its steam pulling you out of the game. lets just hope this will help and please let me know. Good luck