The expected behavior of the native Navbar element is that when you click on any links within it, it will trigger a navbar close interaction. Hence by setting the side overlay to a link block, it triggers a navbar close automatically on click. There are a few past threads regarding this behavior too. Here’s an example.
P.S. You could remove the interactions from the “Menu Button” class as just having it on the main “Navbar” class will work better. If not there could be a possibility of funky bug occurring in the future.