All other creatures that move creatures to your side will now destroy the creature instead if the 5 card limit is already reached. The screenshot shows another example where the highlighted card usually controls a creature but in this case it goes to the graveyard. There were some that moved a creatures from the graveyard and in this case nothing happens.
What’s next: check the spells for this similar sort of behaviour. Also I noticed during testing that if the creature with the ability was attacked, it went straight to the battle animation and there was no time to see the effect. This will also be fixed next.