I once (~10 years ago, wow the time flies) found and reported a bug in iOS Safari where when you enabled touch scrolling on an element inside <body>, it would s

I once (~10 years ago, wow the time flies) found and reported a bug in iOS Safari where when you enabled touch scrolling on an element inside <body>, it would scroll vertically when you swiped horizontally and vice versa. But only when the page also contained an invisible <iframe> that we happened to need because reasons (GWT stuff). Apple fixed it eventually, but I'd love to know exactly what the root cause of the bug was…