[konsole] [Bug 474196] New: The blur effect does not work in Konsole when moving a window if the "Vibrating Window" effect is enabled

[Zhora Zmeikin]

https://bugs.kde.org/show_bug.cgi?id=474196

            Bug ID: 474196
           Summary: The blur effect does not work in Konsole when moving a
                    window if the "Vibrating Window" effect is enabled
    Classification: Applications
           Product: konsole
           Version: 23.08.0
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: rs5334819 at gmail.com
  Target Milestone: ---

Created attachment 161425
  --> https://bugs.kde.org/attachment.cgi?id=161425&action=edit
Demonstration

SUMMARY
In Konsole, you can create a profile with a semi-transparent background and
with it blurred. Everything works fine, exactly until you enable the "Wobbly
window" effect in the KDE Plasma settings. Once enabled, any movement of the
window causes the blurring to be disabled. After that it is restored, but it
starts to flicker a lot.

STEPS TO REPRODUCE
1. Create a profile in Konsole with a transparent background and background
blur.
2. Switch to this profile. 
3. Enable "Wobbly window" effect in settings (Settings -> Workspace Behavior ->
Desktop Effects)
4. Move the Konsole window.

OBSERVED RESULT
Disabling blur, and afterward artifacts (blur starts flickering)

EXPECTED RESULT
The blur doesn't have to disappear. There should be no flickering.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux, Wayland
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.109.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION
Attached is a video demonstration.

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