This isnt the latest version of warzone itself just what the most current version is in TestFlight. Clicking "Load older messages" then closing and reopening chat resizes it appropriatly. One issue for iPhone X is that the chat pull tab becomes unreachable when maxed out (it hides behind the camera array on the hardware.) Might be only possible with the aforementioned bug.
https://www.dropbox.com/s/e3yxcul9122fgw5/Video%20Dec%2025%2C%2012%2016%2034%20AM.mov?dl=0
