For me it's the autofocus property on the close button that didn't work yesterday when I was using this in a project. Ended up adding a line to whenever I call show() like $('#thatModal *[autofocus]').focus()
MDN says this should work as intended out of the box
Could you elaborate on what you mean by "normal close in most examples"? All the examples I see come with a JS snippet to add an event listener to the close button and those work for me in Firefox for Android.
MDN says this should work as intended out of the box