Dashing just doesn't work. I have vampiric strength III and no overlapping keybinds.

The blood bar also just looks like hunger.

You may have a mod incompatibility of some sort.
Vampiric Dash works perfectly fine for me, and the textures work great.
What version of Fabric are you running, and what version of Haema?

Sounds like the server has not told the client that you're a vampire. Does it still happen in 1.6?