[Webkit-unassigned] [Bug 169129] Can't reliably scroll page whenever mouse cursor inside iframe inside scrollable div with touchpad

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=169129

me at zhang.su changed:

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                 CC|                            |me at zhang.su

--- Comment #11 from me at zhang.su ---
I can reproduce this with my application as well. Ping me if you need additional repro cases.

One thing I noticed that might be worth mentioning is that this only happens when the iframe height is smaller than the actual height of the document inside the iframe. In the repro page that Abdullah Adwan provided, all the iframes have a height that is 2px smaller than the actual height of the iframe document because the iframe has a border of size 1px (1px on top and 1px at the bottom, so 2px in total). Scrolling works after removing the border on the iframes. This is consistent with what I observe in my application.

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