RESOLVED FIXED 238617
[iOS] Fixed elements jump when scrolling 
https://bugs.webkit.org/show_bug.cgi?id=238617
Summary [iOS] Fixed elements jump when scrolling
Brent Fulgham
Reported 2022-03-31 10:53:54 PDT
Converted from a codepen.io test case: // Just use your mouse wheel and it'll scroll at a steady pace. In Safari, as long as it's // in debug mode (NOT an iframe), you'll see that the fixed elements on the left/right JUMP // intermittently under heavy load! You MUST open this in debug mode so that it's not in an iframe! https://codepen.io/GreenSock/pen/ExoyEyg/c0402caac3044c3f5bb85022450b059b
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Radar WebKit Bug Importer
Comment 1 2022-03-31 10:54:12 PDT
<rdar://problem/91113767>
Simon Fraser (smfr)
Comment 2 2022-03-31 12:26:13 PDT
I cannot reproduce this in iOS 15.4
Jack Doyle
Comment 3 2022-03-31 22:57:50 PDT
I was seeing it in Safari 15.3 on Mac OS
Simon Fraser (smfr)
Comment 4 2022-04-01 10:44:40 PDT
I don't see it in Safari 15.4 on macOS.
Brent Fulgham
Comment 5 2022-04-06 09:00:19 PDT
@Jack: Can you report your findings with iOS 15.4 or Safari 15.4 on macOS?
Jack Doyle
Comment 6 2022-04-07 00:42:10 PDT
It does seem significantly improved in 15.4. Good job!
Brent Fulgham
Comment 7 2022-04-13 09:41:55 PDT
(In reply to Jack Doyle from comment #6) > It does seem significantly improved in 15.4. Good job! Thank you! Please let us know if you encounter further issues.
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