[Wayland-bugs] [Bug 97425] First scroll event after enabling edge-scrolling is ignored

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97425

            Bug ID: 97425
           Summary: First scroll event after enabling edge-scrolling is
                    ignored
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: sebastian-keller at gmx.de

So far I've only been able to reproduce this under X + gnome-shell as I
couldn't get edge-scrolling to work under wayland + gnome-shell.

To reproduce the bug first make sure 2-finger-scrolling is enabled and
edge-scrolling disabled. Then switch to edge-scrolling (using xinput or the
native gnome settings in >= 3.21.90) and try to scroll. This results in the
following error message and the scroll event being ignored:

(EE) libinput bug: unexpected scroll event 0 in area state

Only the first scroll event after switching is affected. This can be repeated
by switching to 2-finger-scrolling and back again.

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