The following new scroll-snap-point tests are failing periodically: platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-borders.html platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding.html platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-rotated.html Investigate the cause of this flakiness. I have temporarily marked these tests as flaky, and added a timeout to dump the state of the test.
platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-mainframe-slow-horizontal.html is also flaky.
This sometimes makes EWS lie, see bug 145542 comment 16.