Calico Ult can prolong incoming cc and restrict your movement after

[starod2008]

I am somewhat unsure about this, but if Calico ults during movement restricting cc (especially a knock-up), your player model will get stuck in a knocked up animation. This restricts your dashes and movement fix.
This bug appears to get fixed if you dash via her second ability, or use any item that has a specific full body animation to it.