Bug 262207

Summary: Safari viewport suddenly becomes half size
Product: WebKit Reporter: Jesper Bendtsen <jesperbendtsen83>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Major CC: ap, heycam, thorton, webkit-bug-importer, wenson_hsieh, zalan
Priority: P2 Keywords: InRadar
Version: Safari 17   
Hardware: iPhone / iPad   
OS: iOS 17   
Attachments:
Description Flags
Screenshot - iPhone
none
Screenshot - iPad none

Jesper Bendtsen
Reported 2023-09-27 13:09:04 PDT
Created attachment 467904 [details] Screenshot - iPhone Safari viewport suddenly becomes half size. I have come across two places where this happens: 1. When clicking on a deep link in an email in Gmail app and the link opens in Safari. The page is half size. 2. When I view PDF file in installed PWA and take a screenshot and then return to the app "Safari", the page is half size. See videos and diagnosis logs in my feedback: https://feedbackassistant.apple.com/feedback/13209461
Attachments
Screenshot - iPhone (209.07 KB, image/jpeg)
2023-09-27 13:09 PDT, Jesper Bendtsen 		no flags
Details
Screenshot - iPad (645.62 KB, image/png)
2023-09-27 13:09 PDT, Jesper Bendtsen 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Jesper Bendtsen
Comment 1 2023-09-27 13:09:35 PDT
Created attachment 467905 [details] Screenshot - iPad
Jesper Bendtsen
Comment 2 2023-09-27 13:11:09 PDT
Reload page do not help!
Alexey Proskuryakov
Comment 3 2023-09-27 13:30:58 PDT
rdar://116137297 Thank you for the report. Could you please confirm whether this is an iOS 17 regression? Also, I have personally never seen this, including in the Gmail app.
Jesper Bendtsen
Comment 4 2023-09-27 23:31:57 PDT
I get different responses back from my users. It has been there for several months, they say. They all say iOS 16, but they can't remember the exact version where it started. GitHub: <meta name="viewport" content="width=device-width"> PWA: <meta name="viewport" content="viewport-fit: contain, width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no">
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