Rendering issue/junk on screen when in game (possibly related to health bars)

Hello people, Me and a few of my friends have recently noticed a rendering bug while in-game. I don't know if it is just for OCE or other regions aswell but everyone I have talked to has received the bug after 80.1 hit in one form or another.

It results in black bars or dots appearing in distinct areas of the screen. I am almost 100% positive it is related to the update in health bars shading that hit recently in 8.1. One particular example that I find happens to me often is a string of black dots in the exact shape of large krug. I could be wrong about that though I am very sure it is related to the recent health bar updates and I would appreciate it if someone from Riot could look into the situation.

Just to let you know, this happens to me and my friends across a large variety of hardware, I personally am running on a GTX 1060, this had only started updating after I updated to 8.1. I have already done a patch repair. My friend had only recently re-installed League on a separate drive. Obviously, this is a minor bug but it is kind of annoying having random black bars appear when I am jungling.

If anyone has experienced this issue or any similar "black bar" problems after 8.1 please let me know as I would like to trace the source of this. It is definitely a part of League's render output due to it showing up on game capture OBS.

Kind regards, Rengorax (OCE)