I have a problem with the sticky menu of the sydney pro theme. The sticky menu does not appear when site is opened in Firefox browser. Everything seems to be fine in Edge browser.
I tried everything: All the CSS I could find on your support sites, Clear the browser Cache, activate and deactivate “sticky” in customizer, …
Please have a look at my site: www.mühltaler.at/wp
I also tried to make the mobile menu sticky. This does not work in Firefox too. And I found another problem… When I make the mobile menu sticky, there’s some white space above the content (slider, header image).
If you need access to the backend, let me know.