https://bugs.kde.org/show_bug.cgi?id=447401

            Bug ID: 447401
           Summary: Landing page on system settings goes on a loop until
                    crash without loading / QML Binding loop detected for
                    property "preferredHeight" on
                    kcms/kcm_landingpage/contents/ui/main.qml:57:9
           Product: systemsettings
           Version: 5.23.4
          Platform: openSUSE RPMs
                OS: Linux
            Status: REPORTED
          Severity: grave
          Priority: NOR
         Component: Quick Settings
          Assignee: plasma-b...@kde.org
          Reporter: t...@tutanota.com
  Target Milestone: ---

SUMMARY
I was trying to open system settings, but I found that it was not opening, but
actually in the process manager I saw that system settings was still running
although I saw no window or anything. Later I found that opening a specific kcm
trough the app menu opened successfully system settings. But when clicking the
home button (which will load the landing page kcm) it would freeze system
settings.

I've also found that when this happened, the terminal spit out constantly this:
file:///usr/share/kpackage/kcms/kcm_landingpage/contents/ui/main.qml:57:9: QML
FormLayout (parent or ancestor of QQuickLayoutAttached): Binding loop detected
for property "preferredHeight"

STEPS TO REPRODUCE
1. Open system settings normally
or
1. Open an specific kcm trough the menu apps (KDE Wallet, Colors, Global
Theme...)
2. Click on the home button
or
1. In the terminal: systemsettings5 <kcm> (for example: systemsettings5 mouse)
2. Navigate and click the home button
3. See the logs

OBSERVED RESULT
If opened normally, system settings appears as if it's not working
If you open it but load first another kcm and then go to the landing page, it
freezes
It will log the error message shown above constantly, either in the terminal or
the journal

EXPECTED RESULT
System settings will open normally, load and display the landing page
succesfully

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20211220
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.2
Kernel Version: 5.15.8-1-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-5300U CPU @ 2.30GHz
Memory: 7.6 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 5500

ADDITIONAL INFORMATION

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