Bug 438534

Summary: System Settings automatically discards unapplied changes in screenlocker KCM if the 'home' button is pressed.
Product: [Applications] systemsettings Reporter: Kishore Gopalakrishnan <kishore96>
Component: kcm_screenlockerAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: bugseforuns, kde
Priority: HI    
Version First Reported In: 5.22.0   
Target Milestone: ---   
Platform: Other   
OS: Other   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Kishore Gopalakrishnan 2021-06-13 06:55:02 UTC 
SUMMARY
If we click the 'home' button (in the sidebar) to leave the screenlocker KCM, System Settings seems to forget any unapplied changes made by the user (and does not ask whether to apply/discard).

STEPS TO REPRODUCE
1. Go to 'System settings > Workspace Behaviour > Screen locking'
2. Change any setting (but do not click 'apply')
4. Click 'back' (in the sidebar)
5. Click the 'home' button (in the sidebar)
6. Exit (close the window)

OBSERVED RESULTS
The user is never asked whether to apply/discard changes; the unapplied changes are automatically discarded.

EXPECTED RESULTS
System Settings should ask the user whether to apply/discard changed settings. This can happen while exiting the relevant KCM, which is already the behaviour exhibited by, for example, kcm_workspace.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.22.0
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Comment 1 David Edmundson 2021-06-13 11:44:57 UTC 
Confirmed. 

It appears to be anything in a multi-layer category when going to home doesn't unload properly.

There's a related bug that after clicking home and clicking workspace behaviour "screen locking" is selected but it isn't the tab shown.
Comment 2 Patrick Silva 2021-06-13 13:34:48 UTC 

*** This bug has been marked as a duplicate of bug 419592 ***