[DUPLICATE] Felblade on helya, kro. (possible problem source)

[reegshaman]

WoW Freakz spell link: https://www.wow-freakz.com/spells.php?spell=232893&&name=felblade

Bug description: I tested much thing on ptr server. Watch full video about description. I'm not fully sure this is the real problem but this can at least give you an idea.
Watch and let's discuss about this

Proof: https://youtube.com/watch?v=UGohsccG1A8:

.be

Forsen-Havoc Dh

[Quicksand]

It's already reported, also you don't have to figure out the "why", we know that for months, we just don't know the "how to fix it" part :/