Blink makes white part of eye and pupil disappear

Hello! I'm pretty new at rigging for Adobe Character Animator and I got a problem with eye blinking. Here is a structure of eye:

Also I used Behavior "Cycle Layers" for eye blinking. This is how I set up it:

Everytime I try to make eye blink it looks like this:

As you can see the blink makes white part of eye and pupil disappear somewhy. I tried to search how to fix it, but didn't find anything. Is there a way to fix it?