Spark and flame wall casting bug

Anytime flame wall is up and I start to spam spark after about 5 or 6 casts it stops showing new sparks from my character and bouncing around. Not sure if its just visual or my spark is not going out but it appears as if its just a visual bug. This only happens if I'm near flame wall. It even happens if I don't cast the spark through the flame wall.

Any update on this would be much appreciated.

I have noticed the same interaction. I saw another post about this but they had not put 2 and 2 together and figured out it was flame wall causing the bug. It also happens when the flame wall is cast by another player.