I had the same problem and I realised that the only way to efficiently examine the situation was to open the webflow site in another window and do side-by-side comparisons from the homepage and any other page that this was occurring one.
It always seems to be the sub pages triggering the “Current” state of some element of my navbar symbol. I must have made a style change on the current state, and it doesn’t apply to the home page.
Odd trap, but once you know 