RESOLVED FIXED290190
[HDR] Disable SupportHDRDisplay for downlevels 
https://bugs.webkit.org/show_bug.cgi?id=290190
Summary [HDR] Disable SupportHDRDisplay for downlevels
Said Abou-Hallawa
Reported 2025-03-21 10:10:09 PDT
SupportHDRDisplay was enabled unconditionally for macOS and iOS in 291387@main. because things seem to work reasonably well. But recent reports showed that the system frameworks of macOS Sequoia and iOS 18 have a few issues with certain HDR formats. So it is safer to disable it SupportHDRDisplay on down levels and enable it for future releases of macOS and iOS.
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Radar WebKit Bug Importer
Comment 1 2025-03-21 10:10:56 PDT
<rdar://problem/147589810>
Said Abou-Hallawa
Comment 2 2025-03-22 21:10:16 PDT
Pull request: https://github.com/WebKit/WebKit/pull/42899
EWS
Comment 3 2025-03-25 11:48:40 PDT
Committed 292660@main (ca87dcd6655d): <https://commits.webkit.org/292660@main> Reviewed commits have been landed. Closing PR #42899 and removing active labels.
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