[kde] [Bug 357377] New: Widgets disappear from one activity and appear in a diferent one when I try to move the widget

[Bill Oliver via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357377

            Bug ID: 357377
           Summary: Widgets disappear from one activity and appear in a
                    diferent one when I try to move the widget
           Product: kde
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: vendor at billoblog.com

Configuration:  HP Envy laptop, Intel i7, Intel 530 graphics, Fedora 23
KDE: 5.5.0-4 plasma
uname -a: Linux localhost.localdomain 4.2.8-300.fc23.x86_64 #1 SMP Tue Dec 15
16:49:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Occasionally, when I add a widget to a desktop in one activity, and then move
it, it disappears.  I then find it in a different activity.

I noticed the following i my .xsession-errors when I looked:


Both point size and pixel size set. Using pixel size.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemtray/contents/ui/TaskDelegate.qml:156:
TypeError: Cannot read property 'taskItem' of undefined
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
file:///usr/lib64/qt5/qml/org/kde/plasma/extras/ScrollArea.qml:48: Error:
Cannot assign to non-existent property "interactive"
file:///usr/lib64/qt5/qml/QtQuick/Controls/ScrollView.qml:286: TypeError:
Cannot read property '__wheelScrollLines' of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollViewHelper.qml:66:
TypeError: Cannot read property 'padding' of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollViewHelper.qml:65:
TypeError: Cannot read property 'padding' of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollViewHelper.qml:64:
TypeError: Cannot read property 'padding' of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollViewHelper.qml:63:
TypeError: Cannot read property 'padding' of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollViewHelper.qml:114:
TypeError: Cannot read property 'corner' of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollBar.qml:91: TypeError:
Cannot read property of null
file:///usr/lib64/qt5/qml/QtQuick/Controls/Private/ScrollBar.qml:91: TypeError:
Cannot read property of null
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemtray/contents/ui/TaskDelegate.qml:156:
TypeError: Cannot read property 'taskItem' of undefined
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
DelegateModel::item: index out range 5 5
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or
sibling.
networkmanager-qt: void
NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&)
Unhandled property "Devices"
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
networkmanager-qt: void
NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&)
Unhandled property "Devices"
Both point size and pixel size set. Using pixel size.
file:///usr/share/plasma/plasmoids/org.kde.plasma.bluetooth/contents/ui/BluetoothApplet.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.bluetooth/contents/ui/BluetoothApplet.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.bluetooth/contents/ui/BluetoothApplet.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.bluetooth/contents/ui/BluetoothApplet.qml:
QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.


Reproducible: Sometimes

Steps to Reproduce:
1.Create three or four activities
2. Jump around from activity to activity (it seems you have to do this)
3. Add a widget
4. Try to move it -- it disappears
5. Look at the other activites -- it will be in one of them.

Actual Results:  
Widget ended up in the wrong activity

Expected Results:  
Should stay in the activity it was added to.

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