[GAMEPLAY] Jhin's Deadly Flourish marking bug

Whenever i play Jhin, and enemy team has Vladimir, my W's mark visual doesn't disappear on him, no matter how much time passes(not sure if snaring him with Deadly Flourish doesn't remove the visual, but these mark visuals seem to stack). It it only visual bug, and it doesn't really affect the gameplay directly, but i don't know whether i can snare him or not, unless i click on him to see if he has Deadly Flourish's debuff. This is annoying and i hope will soon get fixed. I also noticed the same bug on Brand once, expect the visuals don't stack on him. Sadly i can't provide any screenshots because ym PC refuses to take a screenshot of full-sceen game, and i didn't test it. I'm not sure what causes the issue either, and i don't know at which point in game this bug begins, but it doesn't seem to be related to any item since it pretty much happens everytime i play against Vlad.