My primary menu is below the header and uses background image (a low-opacity .png file). This navigation is set to be sticky with no transition. The body of the page is styled with a background image which is visible through transparent main navigation. When viewed on mobile the slide-out navigation, navigation search, and navigation logo are displayed.
When a page is viewed at a screen width smaller than the break-point (using chrome) clicking the slide-out menu icon brings out the slide-out menu, as expected, but also hides the body’s background image. The body’s background-image remains hidden even after the slide-out navigation is deactivated and is displayed again only following a page reload.
I believe the above to be a bug and hope that it can be addressed.