Frustrating UI when you have a full hand or access to exiled cards.

I play a Valki/Tibalt deck where the planeswalker ultimate allows me to play cards exiled from both graveyards, which naturally gives me access to a ton of cards. Lately it's been bugging so I can't actually scroll to the side to cast spells (or in this case discard a card) from my hand.

Any ideas how to fix this?