The camera is instantly swapping to first person whenever anything is "behind" my character/the camera, including background things like NPCs, light poles, walls, low walls, etc. I cannot zoom out or go back to 3rd person view while this is happening. It's especially noticeable inside buildings, but also happens outside. Here's a video showing the bug where I run around Rawl'kha. I ca't find any settings that fix this, and it is not being caused by an addon (tested with all addons off)
https://youtu.be/h5TTFjM99yc
https://youtu.be/h5TTFjM99yc