Dropdown Toggle Menu Background disappears when link is clicked

I’m building my website and I’m having a hard time with the dropdown toggle menu on mobile. On desktop it works perfectly but on mobile when I click in one of the links the background disappears and the text remains for a few seconds so it all looks a little wonky.

Any idea on how to fix it?
You can try it on mobile here:

And this is my read only link:

Thank you!