The PlayerList CoreGui item cannot be disabled. I used to disable the CoreGui PlayerList in my project, and after checking my script, it should still work. Another dev tested this, as well, and found the same thing to be true. There are no errors, it just doesn’t disappear on PC.
It does disappear on mobile, though.
The player list is still being disabled on my game, how are you disabling the player lists? sounds like it’s a problem on your side.
Disabling the PlayerList works fine on servers – it just doesn’t work on Studio as of right now.
Can confirm on PC, but only in test mode.
On a Roblox server, it works just fine.
I put a fix in for this yesterday as it was reported over on the GitHub repo, which will go out in the next release. I could only reproduce it in studio play solo though. If you are having an issue in start server->start player or live servers please let me know!