If you reset your character while the tween is playing to tween the transparency (to make the bg darker). the background will stay there even when you are respawned !
Expected behavior
Not have a dark bg, i.e: reset on spawn or handle it better.
the black screen always stays for me after the first time of pressing esc and exiting that. to fix it i just press esc again then exit and it doesnt happen again until i join a different game