After finishing a minigame, the score screen will show up but does not go away after the event ends. When the screen is up, you cannot open your inventory, and you cannot kill yourself in order to attempt to clear the screen. You can still interact with things such as the cauldron. The only way I could find to reset this was to disconnect and reconnect to the server.
I’m not sure what caused this bug to happen, or if it happens every minigame. This happened specifically after the ghost hunt minigame, the most I can think of that I did after the minigame ended was interact with the cauldron.