234256 2021-12-13 11:15:27 -0800 window.screenY is always 0 on mobile devices 2022-02-06 02:53:04 -0800 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=171841 InRadar P2 Normal --- 1 aideen webkit-unassigned bfulgham joone simon.fraser webkit-bug-importer zalan oldest_to_newest 1823643 0 aideen 2021-12-13 11:15:27 -0800 window.screenY (https://developer.mozilla.org/en-US/docs/Web/API/Window/screenY) is supposed to return the vertical distance, in CSS pixels, of the top border of the user's browser viewport to the top edge of the screen. On mobile devices (Chrome 96 on Android and iOS + Safari on iOS) it always returns 0. Firefox (Gecko) on Android, however, returns a non-zero value (53 in my case) which is properly the height of the addressbar and other things between the top of the window and top of the screen. PS. I can get this by subtracting event.clientY and event.screenY on touch/click events. But I want it on non-event contexts as well. 1823658 1 aideen 2021-12-13 11:28:13 -0800 PS. I asked it in stackoverflow too, and shared the background of my problem: https://stackoverflow.com/q/70339906 1825658 2 webkit-bug-importer 2021-12-20 11:16:15 -0800 <rdar://problem/86732718>