If I change the background color of the header or do a merge menu, I keep getting a 10px or so white line under the navigation menu. Not sure what is triggering this.
If change the background color of the primary nav, the white line persists. I change the “use nav as a header” The white line goes below the header and body.
I turned off all the caching plugins. In the Customizer > Additional CSS for one site it is blank, the other only has 2 entries that I know for sure what they do.
They don’t share the same plugins, except for a few…but I don’t think that’s the issue.