Replacing a Creature and quickly attempting to replace another Creature while the first Creature's animation is resolving causes the last Creature interacted with to become unresponsive.

Workaround: play another card, or let the replacement animation finish before playing another card.

Steps to reproduce:
1. In a game, cast 5 creatures.
2. Replace a creature.
3. Quickly drag another creature from your hand while the replacement animation is still playing.

Actual Results: The last creature becomes unresponsive and hovers on screen.
Expected Results: The last creature you attempted to play is returned to your hand.