When the hamburger menu opens both the hamburger and the X are visible. I can’t find any way to hide the hamburger and show only the X.
Open up MENU in Editor and make sure you have a solid background and ARRANGE it to the FRONT. Right now your Hamburger Icon is in FRONT
So I need to have a solid background in order for the hamburger menu to disappear?
No you do not, but your fly out should. Arrange to the Front and that should do.