Demonform movespeed gets bugged when targeting enemy with skill right after dashing

Bug Report ID: #59307206

https://youtu.be/QYhYTs5J4Mk

You can see in this video, my normal movespeed is +35.8%, and when I dash in demonform and cast right afterwards, usually I return to that normal movespeed as soon as the cast animation finishes.

But sometimes in demonform, when targeting an enemy (I can't reproduce this in hideout) with a cast right as the dash ends - I get slapped with this movespeed penalty as though I were holding down the cast button still even though I am not. And it stays that way until I do something else like dash or cast again.