Can't hide mouse cursor in specific UI's

@Shmoopy1701
Ok, but then it’s weird that it works fine with menus with only buttons, but doesn’t work with more complex submenus. And buttons and submenus are all extra widgets…

My buttons have this structure and there are not just a simple buttons. I didn’t set them up in any special way.

Maybe Unreal reacts so crookedly to some other things in the nested widgets?