Character locks up during unique enemy fights

Occasionally during unique enemy fights, when the enemy uses some sort of crowd control ability, my character freezes and glides across the map if I attempt to move, as if on ice.

While frozen, I cannot cast spells or attack, nor can I pick up items off the ground. Strangely enough, I can open a portal but I cannot interact with it.

The only solution to this that I've found is to either get hit by the crowd control ability again or to exit to character selection and log back in.

https://www.youtube.com/watch?v=ndz97v6FOeg

After playing some more, I believe this bug is not just with unique enemies, but also with rare enemies, especially some of those found in Vaal temples.