reproducable on several chunk borders (about 6 found) on a 2 player realm (1.17.1 ofc), both on windows 10 home and arch linux with differing hardware. issue is definitly something to do with either realms or how the game loads chunks from our experience.
sky s
still happens on 1.18. always fullscreens onto the last monitor on the gpu. doesnt listen to primary display. on Arch btw