NEW218138
MouseEvent.offsetX/Y: Caching of values may create unexpected results 
https://bugs.webkit.org/show_bug.cgi?id=218138
Summary MouseEvent.offsetX/Y: Caching of values may create unexpected results
Noam Rosenthal
Reported 2020-10-23 14:58:58 PDT
See https://github.com/w3c/csswg-drafts/issues/1070 Currently, offsetX/Y are computed at the first time they are requested rather than when the event is dispatched. This means that if there is a layout between the time of the event and the time of the call to event.offsetX/Y, the results would not match the spec, and may also create an undesired synchronous layout.
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Radar WebKit Bug Importer
Comment 1 2020-10-30 14:59:15 PDT
<rdar://problem/70898493>
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