Posting it again, a day later, just because you didn’t get an answer the first time isn’t going to help…
I played H90/Frenzy Barb for two straight weeks on the PTR where the set was introduced, and have played some on a non-seasonal Barb, and I have not noticed what you’re claiming is something we all know about.
Are you able to post a video of what you’re claiming is the bug being experienced?