[Webkit-unassigned] [Bug 221067] [GTK] Page scrolling by wheel events doesn't work in non-AC mode pages if Hardware Acceleration Policy is changed dynamically from "always" to "never"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221067

Fujii Hironori <Hironori.Fujii at sony.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[WinCairo] Page scrolling   |[GTK] Page scrolling by
                   |by wheel events doesn't     |wheel events doesn't work
                   |work in non-AC mode pages   |in non-AC mode pages if
                   |if async scrolling is       |Hardware Acceleration
                   |enabled                     |Policy is changed
                   |                            |dynamically from "always"
                   |                            |to "never"

--- Comment #7 from Fujii Hironori <Hironori.Fujii at sony.com> ---
(In reply to Fujii Hironori from comment #6)
> This problem can be reproduced with GTK MiniBrowser by switching
> compositing policy from 'always' to 'never' in runtime.

I'm going to fix the GTK problem in this bug ticket.

1. Start GTK MiniBrowser
2. Set Hardware Acceleration Policy to "always" in Preferences
3. Go to a non-AC mode page. For example, https://trac.webkit.org/wiki
4. Set Hardware Acceleration Policy to "never" in Preferences
5. Reload
6. Roll the mouse wheel
7. The page scrolling doesn't work as expected.

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