Signature bundles don't offer rerolls on duplicates

Shop bundles can double up cards you already have.

I picked up the "20% value" signature dream defenders mega bundle yesterday, which gave me all but the neutral imbue cards, so i grabbed the Druid bundle for them, expecting I would be able to reroll the Hamuul duplicate. Now im stuck with 2 copies.

This feels like a major oversight or just is flat out predatory. 2 class packs for 20€ is also bonkers.