https://bugs.kde.org/show_bug.cgi?id=463766

            Bug ID: 463766
           Summary: Slide animation for virtual desktops with multiple
                    monitors is disorienting
    Classification: Plasma
           Product: kwin
           Version: 5.25.5
          Platform: Gentoo Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kwin-bugs-n...@kde.org
          Reporter: burnsmellfact...@gmail.com
  Target Milestone: ---

SUMMARY
Recently, in response to bug #448419, the slide animation for virtual desktops
was changed so that each monitor in a multi-monitor setup would independently
have its own slide animation, as opposed to animating the entire canvas as one
piece.  The reason given in that bug was that the old behavior was
disorienting.  I won't dispute that some people found it disorienting, but I
would like to point out that KDE had behaved that way for many years and in
fact I find the new behavior quite disorienting on my main PC.  I have another
PC with an ultrawide display that is connected using 2 cables, so the computer
behaves as if there are 2 monitors (which in 99% of cases was the intended
result), and in such a setup the new behavior is even more jarring.

STEPS TO REPRODUCE
1. Have multiple monitors (I have 2 like-sided monitors in a left-right
configuration)
2. Setup multiple virtual desktops (I have 2 rows of 3 each, for a total of 6
virtual desktops)
3. Enable "Slide" animation under "Virtual Desktop Switching Animation"
4. Open some windows in various virtual desktops
5. Cycle through the virtual desktops

OBSERVED RESULT
With multiple monitors, windows sliding off one monitor in the direction of
another other monitor will disappear as they pass the boundary point between
the monitors.

EXPECTED RESULT
Windows sliding off one monitor in the direction of another monitor should
slide across that other monitor, the way it used to be.  But since some people
don't like that, there should be a configuration option for the "Slide" effect
-- maybe a checkbox named "Slide each monitor independently" (or "Slide all
monitors as one"), with the default being checked (or unchecked) if you want to
preserve the behavior after bug #448419 was fixed.  Maybe a tooltip or some
other text could inform the user that this option's effect is not observable
unless you have multiple monitors.

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5

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