Bug 235684

Summary:

iOS: Touch events shifted after device rotation if position:fixed is specified.

Product:

WebKit

Reporter:

Takao Baba <baba>

Component:

Layout and Rendering

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Normal

CC:

bfulgham, simon.fraser, thorton, webkit-bug-importer, wenson_hsieh, zalan

Priority:

Keywords:

InRadar

Version:

Safari 15

Hardware:

iPhone / iPad

OS:

Unspecified

Attachments:

Description	Flags
testcase and screenshot	none

Description Takao Baba 2022-01-26 19:45:33 PST

Created attachment 450095 [details]
testcase and screenshot

# Steps to reproduce

1. Open attached index.html on iPhone Safari in portrait orientation.
2. Rotate the device to landscape.
3. An extra margin exists at the bottom of the screen. (I'm not sure this is a correct behavior, but looks weird.) 
4. Tap the top of the screen, then the URL bar appears and the contents shifts down.

# Expected behavior

Touch events should work properly.

# Actual behavior

Touch events respond as if the contents was not shifted down. See step4.png.

# Note

I've tested on iPhone iOS 15.3

Looks related to https://bugs.webkit.org/show_bug.cgi?id=235171

Comment 1 Radar WebKit Bug Importer 2022-02-02 19:46:24 PST

<rdar://problem/88414755>