Possible bug with slider effects and toggles?

I’m trying to use the slider effects with toggles and when the effect changes, the inactive slides’ toggle is still showing.

(Sorry about the black squares, but its proprietary)

anyways, you can clearly see another toggle coming through during the animation. This is also evident in the other effects that have overlapping elements.

I am embedding the slides in a ion-card element.
Each slide is an ion-card element. (card inside a slider inside a card)

any ideas?