246313 2022-10-10 19:39:17 -0700 The second pointerdown/touchstart event is missing on double-tap gesture 2022-11-04 20:34:17 -0700 1 1 1 Unclassified WebKit UI Events Safari 16 iPhone / iPad iOS 16 RESOLVED FIXED InRadar P2 Normal --- 1 weijarz webkit-unassigned thorton webkit-bug-importer wenson_hsieh oldest_to_newest 1904698 0 weijarz 2022-10-10 19:39:17 -0700 To reproduce: https://www.oxyry.com/test/safari-double-tap-bug/safari-double-tap-bug.html 1. Open the url in safari 2. Add this webpage to Home Screen (REQUIRED!!!) 3. Open this webpage from Home Screen icon. 4. Double tap black area, only one pointerdown/touchstart event will be triggered! Note: Open it in Safari browser is working properly. Full source: ``` <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=0"> <title>Safari double tap bug</title> <link rel="manifest" href="manifest.json"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="default"> <style> #rootEl { height: 70vh; overflow: auto; background: #000; color: #fff; /* touch-action: none; */ user-select: none; } </style> </head> <body> <div> <div id="rootEl"></div> <p id="btns"> <button id="clearBtn">Clear</button> <button id="reloadBtn">Reload</button> </p> </div> <script> clearBtn.onclick = () => { rootEl.innerHTML = ''; } reloadBtn.onclick = () => { location.reload(); } const log = (msg) => { const m = document.createElement('div') m.textContent = msg rootEl.appendChild(m) } let i = 0 rootEl.addEventListener('pointerdown', () => { log(`pointerdown #${i++}`) }) let j = 0 rootEl.addEventListener('touchstart', (ev) => { log(`touchstart #${j++}`) // ev.preventDefault() }) </script> </body> </html> ``` 1906352 1 webkit-bug-importer 2022-10-17 19:40:18 -0700 <rdar://problem/101273397> 1910181 2 richard_robinson2 2022-11-03 14:39:46 -0700 Pull request: https://github.com/WebKit/WebKit/pull/6101 1910490 3 ews-feeder 2022-11-04 20:34:16 -0700 Committed 256348@main (6115b3860098): <https://commits.webkit.org/256348@main> Reviewed commits have been landed. Closing PR #6101 and removing active labels.