[GAMEPLAY] UI Health Bar Broke For The Rest Of The Match

Was playing an ARAM match as Singed when during one of the first big fights the health bar in my UI was freaking out. The entire bar went black but the whole thing flashed red every time I took damage, yet the ghostly white bar that capped the bar still moved according to how much health I had. This bug persisted through death and never reverted back to normal at any point in the match. I'll admit the first time in the match I noticed it was when I was poisoned by new Cassiopeia and the bar was flashing red with each damage instance. All I had at the time of it triggering was the new Catalyst and Boots of Speed. I asked my team that match if they had the same bug and apparently it was only me. In case it wasn't clear, the health bar above my head was functioning perfectly fine at all points of the game, and the numbers on the UI health bar were accurate.

With replication, I went to the Howling Abyss as Singed and tried some of the same shenanigans there and couldn't replicate it (as much as I could at least since you can't add bots to Custom HA matches). Went Singed vs Cass on a Summoner's Rift custom, got hit with all of her spells, played long enough to buy Catalyst and Boots, tried autoing and using spells to see if anything specific would trigger it and was not able to replicate it. I used the same runes and masteries in the match where it happened and my tests, and because it's not impossible for it to be relevant, I used Singed's base skin.

In case it could be an interaction specific bug, here's the match where it happened: http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2178622484/39346143?tab=overview