305626 2026-01-15 22:41:36 -0800 Touch on a button affects onmouseover event after original button replaced. 2026-02-02 10:48:10 -0800 1 1 1 Unclassified WebKit UI Events Safari 26 iPhone / iPad visionOS 26 RESOLVED DUPLICATE 304955 InRadar P2 Major --- 1 michael webkit-unassigned ahmad.saleem792 a_protyasha karlcow webkit-bug-importer oldest_to_newest 2172433 0 michael 2026-01-15 22:41:36 -0800 Please use https://www.renshuu.org/ghost_click.html for testing this issue. Was not present in iOS 18.x, only in 26.2 (so far). There is a button on the above webpage with an onclick event. Tapping it will cause it to be hidden, with another button (same location) appearing 500ms later. The second button has a onmouseover attribute, which is somehow activated (presumably by the first tap). Changing the timeout between the disappearance of the first button and the appearance of the second button does not change anything (even for high values such as 2000ms). Although not included in the test code, attaching a ton of event watches after the timeout begins function blockClicks(e) { console.log(e); } document.addEventListener('touchstart', blockClicks, true); document.addEventListener('touchend', blockClicks, true); document.addEventListener('pointerdown', blockClicks, true); document.addEventListener('pointerup', blockClicks, true); document.addEventListener('onmouseover', blockClicks, true); will not register any additional events, leading me to think that is somehow an artifact of the first touch. Note: there is also an onclick attribute on the second button, but it is not triggered, even if the onmouseover is removed. Expected behavior: 1. Tap button one 2. It disappears, replaced with button 2 500ms later 3. No changes to the text in button 2 Actual behavior: 1. Tap button one 2. It disappears, replaced with button 2 500ms later 3. Button 2's text changed to "button 2 moused over" Please amend severity if needed. This lies on a critical pathway in my site/app, so it is major to me, but I can understand how it may not be the case with others. 2172435 1 ahmad.saleem792 2026-01-15 22:54:30 -0800 *** Safari Technology Preview 235 *** Button 2 appear and then if you hover on button 2, it changes text to "button 2 moused over". *** Chrome Canary 146 *** Same as Safari Technology Preview 235. *** Firefox Nightly 149 *** Same as Safari Technology Preview 235. ______ Will test iOS and Android later and update. 2172436 2 478041 ahmad.saleem792 2026-01-15 22:57:19 -0800 Created attachment 478041 Test Case (same as link) 2172667 3 michael 2026-01-16 16:58:52 -0800 My apologies for the update. While it is not in the test code, if (referenced in the original post) document.addEventListener('onmouseover', blockClicks, true); is corrected to document.addEventListener('mouseover', blockClicks, true); And the event listener is active for a longer period of time than the period after the first button disappears (and the second button appears), it does seem to block the mouseover from being activated. A not-so-pretty hack that may resolve it in some cases, but the original issue still remains. 2174378 4 webkit-bug-importer 2026-01-22 22:42:11 -0800 <rdar://problem/168737347> 2177223 5 a_protyasha 2026-02-02 10:48:10 -0800 Thank you for the report! This has been fixed in webkit.org/b/304955. *** This bug has been marked as a duplicate of bug 304955 *** 478041 2026-01-15 22:57:19 -0800 2026-01-15 22:57:19 -0800 Test Case (same as link) Test_Case_305626.html text/html 889 ahmad.saleem792 PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KPGhlYWQ+CiAgICA8bWV0YSBjaGFyc2V0 PSJVVEYtOCI+CiAgICA8bWV0YSBuYW1lPSJ2aWV3cG9ydCIgY29udGVudD0id2lkdGg9ZGV2aWNl LXdpZHRoLCBpbml0aWFsLXNjYWxlPTEuMCI+CiAgICA8dGl0bGU+VGVzdDwvdGl0bGU+CgogICAg PC9oZWFkPgogICAgPGJvZHk+CgoKPGgyPkdob3N0IGNsaWNrPC9oMj4KPGRpdiBzdHlsZT0iaGVp Z2h0OjEwMHB4IiBpZD0idGVzdF9vbmUyIj4KCTxidXR0b24gdHlwZT0iYnV0dG9uIiBvbmNsaWNr PSJjb25zb2xlLmxvZygnYnV0dG9uIG9uZSBjbGljaycpOyB0ZXN0Q2xpY2sodGhpcyk7ICI+QnV0 dG9uIG9uZTwvYnV0dG9uPgo8L2Rpdj4KPGRpdiBpZD0idGVzdF90aHJlZSIgc3R5bGU9ImhlaWdo dDoxMDBweDsgZGlzcGxheTpub25lIiA+Cgk8YnV0dG9uIHR5cGU9ImJ1dHRvbiIgb25jbGljaz0i Y29uc29sZS5sb2coJ2J1dHRvbiB0d28gY2xpY2snKTsgdGhpcy5pbm5lckhUTUwgPSAnYnV0dG9u IHR3byBjbGlja2VkJyAiIG9ubW91c2VvdmVyPSJjb25zb2xlLmxvZygnYnV0dG9uIHR3byBtb3Vz ZW92ZXInKTsgdGhpcy5pbm5lckhUTUwgPSAnYnV0dG9uIHR3byBtb3VzZWQgb3ZlciciID5CdXR0 b24gdHdvPC9idXR0b24+CjwvZGl2PgoKPHNjcmlwdD4KCglmdW5jdGlvbiB0ZXN0Q2xpY2soYnRu KSB7CgogCgkJZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoJ3Rlc3Rfb25lMicpLnN0eWxlLmRpc3Bs YXk9Im5vbmUiOyAKICAgICAgICBzZXRUaW1lb3V0KCAoKSA9PiB7CgkJCQoJCQlkb2N1bWVudC5n ZXRFbGVtZW50QnlJZCgndGVzdF90aHJlZScpLnN0eWxlLmRpc3BsYXk9ImJsb2NrIjsKCQkKCQl9 LDUwMCkKCX0KPC9zY3JpcHQ+CjwvYm9keT4KPC9odG1sPg==