[Webkit-unassigned] [Bug 178519] [GTK] Scrolling sometimes jumps around

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=178519

Gustavo Noronha (kov) <gns at gnome.org> changed:

           What    |Removed                     |Added
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                 CC|                            |aperez at igalia.com

--- Comment #2 from Gustavo Noronha (kov) <gns at gnome.org> ---
Yes, I think computeVelocity() is going nuts and calculating something that causes a very speedy kinetic scrolling animation to be started when a non-momentum scroll ends.

computeVelocity: -28410,07x308959,53 accumDelta.y(): -27,19 (last - first).value(): 0,09

The first values are what computeVelocity is about to return, with the components of the formula it uses following it. Remember that accumDelta.y() is multiplied by -1000 before it is divided by last - first.

I forgot to say I'm on Wayland, unsure if it is relevant, but hey.

Adding Adrien to CC as he's probably the one who understands what's intended for computeVelocity() better =)

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