Hello,
This plugin removes the clif->fixpos function from TF_BACKSLIDING, which fixes the non-animation when using it.
Hope it helps somebody.
https://github.com/bWolfie/HPM-Plugins/blob/master/src/plugins/tf_backsliding.c
Is this official behavior? I remember these skills use to have animations. Now, Shadow Jump will always result in the character facing east (with no finish animation like Asura Strike has) and backsliding just throws your character back without movement animation.