Bug 243306

Summary: REGRESSION(252803@main): Most websites with scrollbars are now rendered improperly on the Mac after this patch. Scrollbars are rendered unconditionally even on devices where scrollbars should be invisible by default (e.g. trackpad-only devices).
Product: WebKit Reporter: WebKit Commit Bot <commit-queue>
Component: New BugsAssignee: WebKit Commit Bot <commit-queue>
Status: RESOLVED FIXED    
Severity: Normal CC: Hironori.Fujii, nham, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 236061    
Attachments:
Description Flags
REVERT of 252803@main
none
apple.com rendered with WebKit 252802
none
apple.com rendered with WebKit 252803 none

Description WebKit Commit Bot 2022-07-28 11:22:14 PDT 
https://commits.webkit.org/252803@main introduced a regression:
Most websites with scrollbars are now rendered improperly on the Mac after this patch. Scrollbars are rendered unconditionally even on devices where scrollbars should be invisible by default (e.g. trackpad-only devices).

This is an automatic bug report generated by webkitbot. If this bug
report was created because of a flaky test, please file a bug for the flaky
test (if we don't already have one on file) and dup this bug against that bug
so that we can track how often these flaky tests fail.
Comment 1 WebKit Commit Bot 2022-07-28 11:22:21 PDT 
Created attachment 461274 [details]
REVERT of 252803@main

Any committer can land this patch automatically by marking it commit-queue+.  The commit-queue will build and test the patch before landing to ensure that the revert will be successful.  This process takes approximately 15 minutes.

If you would like to land the revert faster, you can use the following command:

  webkit-patch land-attachment ATTACHMENT_ID

where ATTACHMENT_ID is the ID of this attachment.
Comment 2 EWS 2022-07-28 11:25:56 PDT 
Committed 252922@main (e6bc0bb67a2e): <https://commits.webkit.org/252922@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 461274 [details].
Comment 3 Radar WebKit Bug Importer 2022-07-28 11:26:21 PDT 
<rdar://problem/97734003>
Comment 4 Ben Nham 2022-07-28 11:28:55 PDT 
Created attachment 461275 [details]
apple.com rendered with WebKit 252802
Comment 5 Ben Nham 2022-07-28 11:29:35 PDT 
Created attachment 461276 [details]
apple.com rendered with WebKit 252803