I am also seeing this same glitch. I'm also seeing horizontal white bars while looking in a specific direction on occasion.
Additionally, my inventory menu glitches out completely sometimes. Actually, my health bar has also glitched out into a weird artifact. Sorry, I don't have screens.
Graphics card is integrated from my laptop. Its an Intel HD 620, whatever that means. This little laptop can run Elder Scrolls Online on high graphics without overheating, so I don't think Boundless should be giving it a problem. (8gb ram, i5 CPU 2.5 ghz)