[plasmashell] [Bug 453828] New: Undo operation possible in lock-screen password field (Ctrl-Z)

[Derek Christ]

https://bugs.kde.org/show_bug.cgi?id=453828

            Bug ID: 453828
           Summary: Undo operation possible in lock-screen password field
                    (Ctrl-Z)
           Product: plasmashell
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Theme - Breeze
          Assignee: plasma-bugs at kde.org
          Reporter: christ.derek at gmail.com
                CC: visual-design at kde.org
  Target Milestone: 1.0

SUMMARY
It's possible to do Ctrl-Z and restore the previous written text in the
password entry field.
Consider the scenario where a user partly enters the password but then decides
to something else and not unlock the screen. The user then clears the password
field thinking the password cannot be restored by some other person.
Some other person can now hit Ctrl-Z and restore the password and make it
visible by clicking on the eye symbol.


STEPS TO REPRODUCE
1. Type something in the lock screen password field
2. Delete it
3. Hit Ctrl-Z

OBSERVED RESULT
Password restored

EXPECTED RESULT
Ctrl-Z should not be possible

SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Kernel Version: 5.17.6-1-MANJARO (64-bit)
Graphics Platform: X11

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