Specifically, the failure reads "FAIL mouse pointerevent attributes assert_equals: movementX should be 0 for event other than pointermove. expected 0 but got 20" i.e. We should make sure that only pointermove events have non-zero movementX/movementY values.
<rdar://problem/111635046>
Pull request: https://github.com/WebKit/WebKit/pull/15486
Committed 265730@main (dd9d402d27a3): <https://commits.webkit.org/265730@main> Reviewed commits have been landed. Closing PR #15486 and removing active labels.