[Webkit-unassigned] [Bug 153304] Main frame scrollbars not updated on hovering when using overlay scrollbars

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=153304

--- Comment #8 from Beth Dakin <bdakin at apple.com> ---
(In reply to comment #7)
> (In reply to comment #5)
> > (In reply to comment #4)
> > > I'm curious, do OS X scrollbars not change in appearance when hovered?
> > 
> > Legacy scrollbars do, but overlay scrollbars don't.
> 
> This is false. 
> 
> On Mac, overlay scrollbars become fatter and get a visible track when
> hovered, and that works correctly in tip of tree WebKit for me. Does it fail
> for you on some version of Mac OS? If so, what Mac OS version are you
> testing on?
> 
> Which platform does that patch affect?

Of course I assume GTK, but I am asking for specifics of the platform because I am curious about the exact platform behaviors and making sure we are as consistent as possible in this code since a lot of it was written thinking about Mac behavior. I want to make sure that other platforms using it understand the Mac behavior and are truly using it for similar purposes. (In other words, I want to make sure we all have the same definition of what an overlay vs. legacy scrollbar is.)

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