When I open the chat with the Enter or Slash key, a cluttered menu of the chat settings, where I can change the font, color, size, etc, appeared and cannot exit out at all. I have to close the game and start it up again. I soon found it was because I had resource packs and behavior packs I activated and it showed this mess. I also check just plain vanilla and worked fine, no cluttered chat settings and I can easily exit out. Please install some future patches for this update that can work properly with resource packs and behavior packs. Thank you for reading this issue and I hope this gets through.