Slide-out cart seems broken - can anyone take a look?

Hey all,

I recently made a small change to the navbar of my e-commerce site and now the slide-out cart has a weird bug where it only displays over the navbar and not the whole page. It seems to have gained a new fixed height.

Weirdly this only displays this way on the published site and not the designer.

If anyone can take a look at my project and figure out the issue that would be greatly appreciated.

Here is my site Read-Only:

And the published site: