Created attachment 466446 [details] screen recording of the reproduction Tapping an element doesn't fire the pointer down event in this setup: 1. The button itself has "position: fixed" set 2. The ancestors have "height: 100%" set 3. The page has a viewport meta tag set (seems to happen only on a small-ish viewport width. If I set the width to 1200, it works testing on an ipad mini) You could find the reproduction sandbox here: https://codesandbox.io/s/young-moon-4uhybj?file=/public/index.html. Attached is a video of my reproduction on an ipad mini with iPadOS 16.3.1: the button has an onpointerdown callback that will update the number on the button. When I scroll to the bottom and scroll back up a bit, tapping doesn't update the value until I scroll to a different position. It works if I change one of the conditions above, or if I use onclick instead.