Laelia, the Blade Reforged doesn't trigger on Hideaway

[Wizzerinus]

What is the expected behaviour of the card?

• Whenever one or more cards are put into exile from your library, put a +1/+1 counter on Laelia, the Blade Reforged.

What is the actual behaviour of the card?

• Hideaway doesn't cause Laelia to trigger.

Screenshot

Please provide a list of affected cards Affects: [Laelia, the Blade Reforged]

Card Images