Bug 265578

Summary: Visual viewport height updated late when Safari UI is expanded
Product: WebKit Reporter: Bruno Stasse <augus.dupin>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: a_protyasha, bfulgham, pmusaraj, simon.fraser, webkit-bug-importer, wenson_hsieh, zalan
Priority: P2 Keywords: InRadar
Version: Safari 17   
Hardware: iPhone / iPad   
OS: All   
Attachments:
Description Flags
testcase none

Bruno Stasse
Reported 2023-11-30 06:29:04 PST
Created attachment 468822 [details] testcase In iOS Safari, if the browser UI is expanded, when focusing an input causing the appearance of the virtual keyboard, the visual viewport only gets resized at the end of the virtual keyboard opening/closing animation. When Safari's UI is collapsed (as a result of scrolling or when the user goes into settings and selects "Hide Toolbar"), or when it is absent (i.e. when the page has been installed with "Add to Home Screen", the visual viewport gets resized immediately after focusing the input, as expected. Steps to reproduce: - open the test case in Safari iOS - make sure the browser UI is expanded - tap the input - notice the visual viewport height displayed only gets updated at the end of the keyboard opening animation - tap "Done" in the virtual keyboard - notice the visual viewport height displayed only gets updated at the end of the keyboard closing animation It is expected that the visual viewport height gets updated and the resize event on visualViewport fires right away when the virtual keyboard starts opening/closing in all situations.
Attachments
testcase (942 bytes, text/html)
2023-11-30 06:29 PST, Bruno Stasse 		no flags
Details
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Radar WebKit Bug Importer
Comment 1 2023-11-30 13:06:34 PST
<rdar://problem/118999803>
Bruno Stasse
Comment 2 2023-12-12 04:52:06 PST
Additional information: the delay is only present when Safari's address bar is positioned at the bottom, not when it is positioned at the top.
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