305873 – REGRESSION(304761@main): wpt /uievents/mouse/mouseevent_move_button.html, /uievents/mouse/synthetic-mouse-enter-leave-over-out-button-state-after-target-removed.tentative.html?buttonType=MIDDLE&button=1&buttons=4

NEW305873

REGRESSION(304761@main): wpt /uievents/mouse/mouseevent_move_button.html, /uievents/mouse/synthetic-mouse-enter-leave-over-out-button-state-after-target-removed.tentative.html?buttonType=MIDDLE&button=1&buttons=4

https://bugs.webkit.org/show_bug.cgi?id=305873

Summary REGRESSION(304761@main): wpt /uievents/mouse/mouseevent_move_button.html, /ui...

Sam Sneddon [:gsnedders]

Reported 2026-01-20 14:12:14 PST

See: https://wpt.fyi/results/?q=exists%28safari%3Apass%7Csafari%3Aok%29%20and%20exists%28safari%3A%21pass%26safari%3A%21ok%29%20and%20%28path%3A%2Fuievents%2Fmouse%2Fmouseevent_move_button.html%20or%20path%3A%2Fuievents%2Fmouse%2Fsynthetic-mouse-enter-leave-over-out-button-state-after-target-removed.tentative.html%20or%20path%3A%2Fwebdriver%2Ftests%2Fclassic%2Fperform_actions%2Fpointer_mouse.py%29&run_id=6253230603632640&run_id=6320828422815744&run_id=6309617283104768&run_id=6221924922556416&run_id=6194340293771264 Notably this includes /uievents/mouse/synthetic-mouse-enter-leave-over-out-button-state-after-target-removed.tentative.html?buttonType=MIDDLE&button=1&buttons=4 which is part of Interop 2025. This regressions between STP 234 and STP 235 bisects down to 304761@main.

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Radar WebKit Bug Importer

Comment 1 2026-01-20 14:12:20 PST

<rdar://problem/168535356>

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Status NEW

Resolution

Priority P2

Severity Normal

Classification Unclassified

Version WebKit Nightly Build

Hardware Unspecified

OS Unspecified

Product WebKit

Component New Bugs

Assignee

Nobody

Reported

2026-01-20 14:12 PST

Modified

2026-01-20 14:13 PST History

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Keywords InRadar

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