[konsole] [Bug 503420] New: "QLayout: Cannot add a null widget to QHBoxLayout/" error when invoking konsole + ssh at a shell prompt

[Jim Fischer]

https://bugs.kde.org/show_bug.cgi?id=503420

            Bug ID: 503420
           Summary: "QLayout: Cannot add a null widget to QHBoxLayout/"
                    error when invoking konsole + ssh at a shell prompt
    Classification: Applications
           Product: konsole
           Version: 25.04.0
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: jfischer_5809 at yahoo.com
  Target Milestone: ---

SUMMARY
When I spawn a new konsole instance via a shell prompt, and the konsole command
line uses the `-e` option to invoke an SSH command line, the newly created
konsole process emits the following diagnostic message:

QLayout: Cannot add a null widget to QHBoxLayout/

STEPS TO REPRODUCE
1. Open any command shell window, e.g., xterm, konsole
2. At the shell prompt, type a command line that spawns a new konsole process,
and uses the `-e` option to invoke an SSH command line, such as:

/usr/bin/konsole -e /usr/bin/ssh -A -X -i ~/.ssh/id_ed25519 -p 22
pi at 192.168.1.3

[Note 1.  In this example, the SSH command performs a remote login as user 'pi'
on a Raspberry Pi whose IPv4 address is 192.168.1.3. --end note]

OBSERVED RESULT
$ /usr/bin/konsole -e /usr/bin/ssh -A -X -i ~/.ssh/id_ed25519 -p 22
pi at 192.168.1.3
QLayout: Cannot add a null widget to QHBoxLayout/
QThreadStorage: Thread 0x563588e32bc0 exited after QThreadStorage 9 destroyed

A new konsole window opens, the SSH command line runs and successfully logs in
as user 'pi' on the remote host.  I can now use the new konsole window to run
commands on the remote host.

EXPECTED RESULT
The same as above, but without the Qt diagnostic message
QLayout: Cannot add a null widget to QHBoxLayout/

[Note 1.  I've filed a separate but report regarding the second Qt diagnostic
message,
QThreadStorage: Thread 0x563588e32bc0 exited after QThreadStorage 9 destroyed
--end note]

SOFTWARE/OS VERSIONS
$ kinfo
Operating System: Fedora Linux 41
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.2
Kernel Version: 6.14.3-200.fc41.x86_64 (64-bit)
Graphics Platform: X11
Processors: 4 × 13th Gen Intel® Core™ i7-13700
Memory: 5.7 GiB of RAM
Graphics Processor: llvmpipe

ADDITIONAL INFORMATION

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