[Bug 307473] New: Window kept on screen after closing

[kdebugzilla at gamblit.org]

https://bugs.kde.org/show_bug.cgi?id=307473

            Bug ID: 307473
          Severity: major
           Version: 4.9
          Priority: NOR
          Assignee: unassigned-bugs at kde.org
           Summary: Window kept on screen after closing
    Classification: Unclassified
                OS: Linux
          Reporter: kdebugzilla at gamblit.org
          Hardware: Fedora RPMs
            Status: UNCONFIRMED
         Component: general
           Product: kde

After updating to KDE 4.9.1 I've started getting "stuck" windows. Today I got
to my computer, entered the password to unlock it and it unlocked fine but the
window asking for the password was kept on screen. Background image showed
fine, applications worked fine, except the unlock window was in front of them
all.

Cursor was responding to window underneath, not to the stuck window. Tried
"xkill" on the stuck window but the window underneath was killed. Only way I
got it to disappear was restarting X with Ctrl-Alt-Bcksp

Later it happened again, this time with a window asking for the root password
(i was changing some clock settings). "xkill" doesn't work on it and it's only
displaying on it's original desktop (and not on all six virtual desktops). This
window isn't always on top and as such doesn't really bother me so I haven't
restarted X so as to able to extract information from the system.

Another curious thing is that this second window actually goes down the window
stack like a normal window. It started on top, then when i changed to a second
window it went behind that window, not to the bottom. It appears to work like a
window that is "transparent" to input events.

Marked it with Major severity because if the window is an always-on-top it
makes using the desktop very very hard.

Reproducible: Couldn't Reproduce

Steps to Reproduce:
No idea....

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