navbar needs distinctive term

Not sure if others have pointed this out, but your reference to the MDL “navigation” as .navbar conflicts with a lot of themes that seem to use the same term. The most recent theme I found is Graphene.

If I were to be honest, everyone (them and you) should likely have it named .xxx-navbar distinct to your product: .mdl-navbar, .graphene-navbar and so on.

Regardless, any way to fix this other than editing your code and disconnecting it from your site updates?

I am posting this to their theme as well.