https://bugs.kde.org/show_bug.cgi?id=453943

            Bug ID: 453943
           Summary: New desktop-grid effect is completely broken
           Product: kwin
           Version: git master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: effects-desktop-grid
          Assignee: kwin-bugs-n...@kde.org
          Reporter: bastimeyer...@gmail.com
  Target Milestone: ---
             Flags: Wayland+, X11+

SUMMARY
I've just built kwin from the master branch in order to check out the new
desktop-grid effect, whose reimplementation recently closed lots of bugs on
this issue tracker. Unfortunately, there are a ton of bugs which make this
reimplementation pretty much impossible to use, which would be a real shame if
it would make it like this into 5.25. The issues/bugs can be observed on both
X11 and Wayland.

This or at least some of it could be a problem with my build (see additional
information below), but KWin built fine, so I'm not sure if it indeed is.
Apologies if this is caused by a build-misconfiguration on my end and if this
bug report invalid.

Here's a short demonstration video:
https://youtu.be/A0ydBC6tvUQ

And here's the list of the issues I've encountered after 5 minutes of use:

1. The opening and closing animation is jittering like crazy. This is
especially noticable when no windows are shown or all windows are minimized.
2. The gap between desktops can't be configured anymore and it now always shows
a gap of several pixels, which is very annoying when the desktops are aligned
in a grid, and not linearly.
3. The animation when moving windows on the grid is broken and it always uses
the first desktop as the window's origin instead of its current/previous
desktop.
4. Windows can't be moved onto or from a different screen anymore, meaning that
windows can only moved onto different desktops on the same screen.
5. When moving windows, the next click will be swallowed, so in order to go
back to one of the desktops after moving a window, you need to click twice.
6. The window-layout (previously called present-windows) in the desktop-grid
effect is broken when "closest" is selected, and it immediately re-orders
windows during/after the desktop-grid opening animation.
7. There is no indication anymore which desktop is active. Previously, this was
done by dimming the non-active desktops a bit.
8. Middle-clicking a window doesn't do anything anymore.
9. The settings of the previous implementation were partly kept and partly
lost.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.4

ADDITIONAL INFORMATION
- KWin built from 09ba8729fc12 (current master) using the modified PKGBUILD of
the Arch repos
- kdecoration built from 4123ec8c1993 (current master) using the modified
PKGBUILD of the Arch repos
- plasma-wayland-protocols built from 26fb07b9f8d3 (current master) using the
modified PKGBUILD of the Arch repos
- the remaining dependencies were all from the official Arch repos

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