Fixed in 21w14a, can no longer reproduce
I experienced this bug a couple of times in a 21w11a server.
I also noticed that tile entities such as hoppers or furnaces were not updating, staying frozen in time while block interactions like placing water and having it flow would work just fine.
Leaving the server and joining back caused the chunks to "wake up" but all data on those chunks rolled back and progress didn't save.
Can reproduce in 1.18.1, this happens when moving from one chunk to another regardless of the direction the player is facing, but only in one direction (happens when going from chunk A to B but not B to A)