Created attachment 170517 [details]
Fields empty

SUMMARY
Clicking on session -> "Desktop Session" KCM show checkbox and radio button and the textfield correctly, after that if clicking on "Locations" KCM (in Session) and than clicking again on "Desktop Session" make checkbox and radiobutton and textfield empty (possibly failing to retrieve info).

STEPS TO REPRODUCE
1. Clicking on session -> "Desktop Session" KCM
2. Clicking "Locations" KCM
3. Clicking "Desktop Session" KCM

OBSERVED RESULT
 checkbox and radiobutton and textfield empty

EXPECTED RESULT
 checkbox and radiobutton and textfield should show data.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.0.90
KDE Frameworks Version: 6.3.0
Qt Version: 6.8.0
Kernel Version: 6.9.4-arch1-1 (64-bit)
Graphics Platform: Wayland

OUTPUT IN CONSOLE
    kf.kirigami.layouts: FormData.buddyFor must be a direct child of the attachee. Attachee:     
    QQuickColumnLayout(0x59139143c470, parent=0x59139168a0d0, geometry=0,0 0x0), buddyFor: 
    TextField_QMLTYPE_97(0x591390db00d0, parent=0x59139143c5f0, geometry=0,0 0x0)
    qml: Page SubCategoryPage_QMLTYPE_125(0x59139118da80) is already in the PageRow
    qml: Pushed pages do not conform to the rules. Please check the documentation.
    qml: push (file:///usr/lib/qt6/qml/org/kde/kirigami/PageRow.qml:223)
    onActiveSubCategoryRowChanged (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:180)
    expression for onClicked (qrc:/qt/qml/org/kde/systemsettings/CategoriesPage.qml:207)
    qml: Page SubCategoryPage_QMLTYPE_125(0x59139118da80) is already in the PageRow
    qml: Pushed pages do not conform to the rules. Please check the documentation.
    qml: push (file:///usr/lib/qt6/qml/org/kde/kirigami/PageRow.qml:223)
    onActiveSubCategoryRowChanged (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:180)
    expression for onClicked (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:210)
    kf.kirigami.layouts: FormData.buddyFor must be a direct child of the attachee. Attachee:    
    QQuickColumnLayout(0x591391cc94e0, parent=0x591391de3ee0, geometry=0,0 0x0), buddyFor:
    TextField_QMLTYPE_97(0x591391cb38f0, parent=0x59139154d380, geometry=0,0 0x0)
    qrc:/kcm/kcm_smserver/main.qml:81:21: Unable to assign [undefined] to bool
    qrc:/kcm/kcm_smserver/main.qml:155:25: Unable to assign [undefined] to QString
    qml: Page SubCategoryPage_QMLTYPE_125(0x59139118da80) is already in the PageRow
    qml: Pushed pages do not conform to the rules. Please check the documentation.
    qml: push (file:///usr/lib/qt6/qml/org/kde/kirigami/PageRow.qml:223)
    onActiveSubCategoryRowChanged (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:180)
    expression for onClicked (qrc:/qt/qml/org/kde/systemsettings/SubCategoryPage.qml:210)