Hello Forgeborn!
We are aware of an issue in game where certain spells undo themselves when dragged from their hand.
These cards can still be played by clicking on the card instead of dragging it.
This issue is largely effecting cards that don't target something like “Forbidden Rite” and “Rise and Shine”
As well as cards that give you multiple choices like "Pack's Blessing"
We are looking into this issue and will update you when we have a fix!