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

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