Modifying SwipeCard subview (hidden to not-hidden) from didSwipeCardAt not working

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Describe the bug
I'm trying to modify the following card in the stack based on the direction that the current card was swiped. If it is swiped left I want to show a hidden view on the following card in the stack. When I get the following card in stack and try and update a hidden subview to hidden = false nothing happens.

To Reproduce
Steps to reproduce the behavior:

1. Grab next SwipeCard in stack in didSwipeCartAt
2. Try and modify a subview of said SwipeCard (i.e. set hidden = false)
3. No changes to subview visibility occurs