Dagger of Unmaking - return bug

[WishmasterX]

My hero: Eladwen Frostmire
Opponent hero: Amber Rain
My table: Bazaar
Opponent table: Jeweler's Dream, The King's Pride, Layarian Seductress (have 2 health)
I play from hand Dagger of Unmaking, attacking to Layarian Seductress. Layarian Seductress receive 1 damage, was not return to hand and defend to hero.
I think, that bug is when allie receive damage from Dagger of Unmaking and remain only 1 health from The King's Pride.

[Airact]

Did the opponent, by any chance, have 7 cards in their hand when you hit the ally?

[Raphael Majere]

Did the opponent, by any chance, have 7 cards in their hand when you hit the ally?

To add, the max number of cards in one's hand is 7. As such, abilities and effects that cause cards to be bounced back to hand will not work or take place. Likewise, if you had 2 cards in hand while your opponent has 7, when you cast a bad Santa, you will draw 3 cards while your opponent will draw none.

[WishmasterX]

On evening I had same problem with Furrion Terror, what was play in this turn and have full health. Unfortunately I do not remember numbers of cards in opponent hand.