Corrupted sprite

I'm randomly getting these kinds of corrupted sprites sometimes when assigning a sprite to a sprite renderer using the default sprite shader on 2018.3.5f1. There is no animator/animation being used.



Sometimes it just flashes that and then goes normal but other times it sticks until I assign a different sprite (and then is fine if I go back to the original sprite). It happens with different sprites so it doesn't seem like it's something to do with a particular one. It is a sliced sprite but all the frames look fine and it doesn't ever do it consistently for a certain frame. Not really sure where to start debugging this

 

I actually figured the issue out tho I could put it together into a project but I'm not really sure it's a bug per se.

My animation system runs separate from Unity and once in a great while it'd assign multiple sprites to a renderer in a single Unity frame. These are directional sprites so occasionally a sprite for an animation would get assigned and later in the frame the directional checker would run and if the view direction changed it would assign a different sprite based on the new direction. There was also a bug where it might try to assign the same sprite multiple times in a single frame. These multiple assignments sometimes caused the renderer to spaz out.

I solved it by removing any access to the renderer from the larger system and only process a single change sprite request (the most recent one) at the end of the frame.

 

Nope, just normal sprite sheets. Stuff like this: https://i.imgur.com/gjXDWxx.jpg