Bug 205396 - Rotating the device increases the page zoom with each rotation, once a pinch zoom has been performed
Summary: Rotating the device increases the page zoom with each rotation, once a pinch ...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: Safari 13
Hardware: iPhone / iPad iOS 13
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2019-12-18 08:22 PST by webkitwyv
Modified: 2019-12-18 12:40 PST (History)
3 users (show)

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Description webkitwyv 2019-12-18 08:22:29 PST 
Steps to reproduce:

- Create an html file with e.g. just the word "Test" in it.
- Open that file using Safari on a device running at least iOS 13. The bug cannot be reproduced on a lower iOS version or on Chrome for iOS.
- Pinch zoom the page in and back out to its original zoom level.
- Change the device orientation a couple of times. With each rotation, the zoom will increase a little bit, making the word "Test" appear larger and larger.

Additional info:

- The bug can be "disabled" by reloading the page with a changed URL, e.g. by appending a '#' to the URL or removing it again.
- The bug will then not occur again until another pinch zoom is performed.
Comment 1 webkitwyv 2019-12-18 08:27:38 PST 
Another way to reproduce it is (after the pinch zoom) by closing the browser and reopening it. With each closing and opening, the zoom will increase by quite a bit.
Comment 2 Radar WebKit Bug Importer 2019-12-18 12:40:29 PST 
<rdar://problem/58053723>