ieiji
While the chatbox is open on desktop it blocks input to the world. Prior to this bug, movement, menu related keybinds, and the push to talk button would as expected be blocked. However, the input would still get through the chatbox to the world, which could used by the world to allow input to certain things (such as cars, pianos, or other pilotable/usable objects that require keyboard control).
For a better example, previously while playing piano with an udon piano, opening the chatbox would guarantee you wouldn't be constantly muting and unmuting your mic during playing. The inputs would still make it through to the piano, allowing you to play, but not affect your personal game.
Steps to reproduce:
  1. Go to a world which previously used this functionality, in desktop mode. (the virtualfurence hotel is a good example.)
  2. Open the chatbox and attempt to utilize the functionality as it was intended to be used prior. (In the virtualfurence hotel, switch the piano to QWERTY keyboard mode using the options menu next to the keys, sit on the piano, open the chatbox, then attempt to play the piano.)