UI bug -- Enemy healthbars not appearing

[virtualshelf124]

Enemy healthbars don't seem to appear properly in both Street Brawl and normal game. Makes it difficult to tell who's an enemy or not. I play on low graphics settings (All low, FSAA upscaling.) so possibly related to that as none of my friends have the issue. Also not using the alternate healthbars, just the default ones.

Also possible they're being occluded by other elements, since when they are behind a Seven ball I also noticed the parts that were covered disappeared.

Thanks!

Edit: Forgot to say it's not all the time, sometimes they appear just fine, other times they aren't visible at all.