Created attachment 139305 [details]
screenshot of the issue in its full glory

SUMMARY
Settings panes are not updated correctly when externally invoked while System Settings is already open and displaying a different item then the one being invoked.

STEPS TO REPRODUCE
1. Open System Settings
2. Navigate to an entry which contains sub-entries (i.e. Workspace Behavior)
3. Open Application Launcher
4. Search for another Settings item (i.e. users) and launch it

OBSERVED RESULT
'Manage Users' is displayed, but with the 'Workspace Behavior' pane still opened on the left.

EXPECTED RESULT
Since 'Manage Users' is not a sub-entry of 'Workspace Behavior', I expect System Settings to close the pane and display 'Users' instead.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Neon User Edition
(available in About System)
KDE Plasma Version: 5.22.0
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION