We should never (currently) start a swipe from a non-begin-phase wheel event. We already check this in handleScrollWheelEvent, but can still get non-begin-phase events in wheelEventWasNotHandled. And, AppKit throws an exception when we try to start a swipe from end-phase events. <rdar://problem/15959481>
Created attachment 222841 [details] patch
Comment on attachment 222841 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=222841&action=review > Source/WebKit2/ChangeLog:24 > - Sideways 'wobble' when scrolling with trackpad on Mavericks > - https://bugs.webkit.org/show_bug.cgi?id=127521 > - -and corresponding- > + Sideways 'wobble' when scrolling with trackpad on Mavericks > + https://bugs.webkit.org/show_bug.cgi?id=127521 > + -and corresponding- I don't know what my editor is doing here.
http://trac.webkit.org/changeset/163192