Why does this full page slider disable underlying animations after slide out?

If you click “Information” and then close the overlay, you’ll find that all the hover states in the nav area are disabled, including the “Information” link. Why?

To animate I’m using display:none, and then display:block/flex, and then move up 100svh. To animate out it’s just move down 100svh and then display:none.

I don’t believe I’m using opacity effects or visibility: hidden anywhere relevant to this.

What’s going on?

Here are my public share links: