https://bugs.kde.org/show_bug.cgi?id=455879

            Bug ID: 455879
           Summary: Window printed on bad virtual desktop
           Product: kwin
           Version: 5.25.1
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: compositing
          Assignee: kwin-bugs-n...@kde.org
          Reporter: arthur.poulet....@sceptique.eu
  Target Milestone: ---

Hello,

Since a few days (mid-june 2022) sometime it happens that a window in a virtual
desktop A is printed when switching to virtual desktop B. Not easy to reproduce
manually. May stop after some times or changing to any visual effect when
switching virt desktop.

Error that may be relevant (or not i'm not sure) on my journalctl I've seen:

```
juin 24 10:36:38 arthurp systemsettings5[44676]:
file:///usr/share/kpackage/kcms/kcm_desktoptheme/contents/ui/main.qml:58:14:
QML RowLayout: Cannot anchor to an item that isn't a parent or sibling.
juin 24 10:36:39 arthurp systemsettings5[44676]:
QQmlEngine::setContextForObject(): Object already has a QQmlContext
juin 24 10:36:39 arthurp systemsettings5[44676]:
file:///usr/lib/qt/qml/org/kde/kirigami.2/PlaceholderMessage.qml:235:5: QML
Heading: Binding loop detected for property "verticalAlignment"
juin 24 10:36:39 arthurp systemsettings5[44676]:
file:///usr/lib/qt/qml/org/kde/kcm/AbstractKCM.qml:60:13: QML Control: Binding
loop detected for property "implicitHeight"
juin 24 10:36:39 arthurp systemsettings5[44676]:
file:///usr/share/kpackage/kcms/kcm_colors/contents/ui/main.qml:293:25: Unable
to assign [undefined] to bool
juin 24 10:36:39 arthurp systemsettings5[44676]:
file:///usr/share/kpackage/kcms/kcm_colors/contents/ui/main.qml:85:13: QML
ColumnLayout: Cannot anchor to an item that isn't a parent or sibling.


juin 24 10:37:02 arthurp kwin_x11[9424]: qt.qpa.xcb: QXcbConnection: XCB error:
3 (BadWindow), sequence: 23212, resource id: 19070799, major code: 3
(GetWindowAttributes), minor code: 0
juin 24 10:37:02 arthurp kwin_x11[9424]: qt.qpa.xcb: QXcbConnection: XCB error:
9 (BadDrawable), sequence: 23213, resource id: 19070799, major code: 14
(GetGeometry), minor code: 0
```

I'll keep an eye on it to see if I can reproduce it or find a more accurage
log.

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