[Webkit-unassigned] [Bug 232376] [GLIB] twitch.tv forces synchronous scrolling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232376

Chris Lord <clord at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|twitch.tv forces            |[GLIB] twitch.tv forces
                   |synchronous scrolling       |synchronous scrolling

--- Comment #5 from Chris Lord <clord at igalia.com> ---
(In reply to Simon Fraser (smfr) from comment #4)
> Does the page call preventDefault() on the first wheel event in a gesture?

No, I don't think so, but I need to confirm (if it does, then indeed, scrolling shouldn't work...) Can you confirm if async scrolling here works on Mac?

> We have logic now to stay on the threaded scrolling path as long as the page
> doesn't do that. See wheelEventGesturesBecomeNonBlocking() code.

Thanks - my guess is this isn't working on Linux because the event phases are a bit funky and/or because latching isn't working correctly (or maybe some other unimplemented thing). Will look into this and fix.

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