[Webkit-unassigned] [Bug 19033] Scrolling does not work when the mouse down is handled by a node

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=19033





--- Comment #10 from Steven Wittens <steven at acko.net>  2013-08-27 15:08:57 PST ---
Created an attachment (id=209805)
 --> (https://bugs.webkit.org/attachment.cgi?id=209805&action=review)
Reduced test case

This bug is occurring on http://acko.net/ anywhere at the top. Debugging confirms a document mousedown handler fires when clicking the scrollbar. Emptying out the entire DOM does not fix this.

This is on Mac OS X, both with and without permanent scrollbars enabled. When using temporary scrollbars, you can also click the Gear button in the top right through the scrollbar.

I've attached a reduced test case. Note:

1) The scrollbar is unusable with the mouse
2) The grey div punches through the scrollbar for hit testing

Bug appears on Safari 6.0.5, Chrome 29, Chrome 31.

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