In default client the combat UI moves around the player/camera. Honestly i've no idea how long its done this for, I only noticed it today when looking at the default client for some stuff. I actually quite like it, but it breaks as soon as you mount anything. Be it a boat, sled, horse, chair, whatever.
On a second note, it goes completely off-screen in bad cam. I know bad cam isn't accesisble without using a command in default client but for me its literally the only camera that's 'playable' in this game, i can't stand the default camera personally. Honestly bad cam should just be an option in the settings in default client.
(i've no idea how to embed a video)
see here: https://i.imgur.com/tkiDPMp.mp4