this happens to me on some multiplayer servers. and it happens to multiple players, not just me. (not at the same time though). mostly happens when playing in first person view. going into the lobby and respawning solves the problem.
--"also happening in editor missions while playing singleplayer, pausing and resuming fixes"
--"fixed after a game restart but happens and continues to happen whenever i join that specific game mode. (happens even in single player after disconnecting)"