PR# 19854 EiffelStudio when started from a shell, crashes on exit

I commonly start Eiffelstudio from a shell.

Since changing to 21.11 I have had several instances where, after selecting the menu command to Exit, and confirmed, I get the following
response to my shell window:
==================================================
ec: PANIC: Unexpected harmful signal (Segmentation fault) ...

ec: system execution failed.
Following is the set of recorded exceptions.
NB: The raised panic may have induced completely inconsistent information:

******************************** Thread exception *****************************
In thread           Root thread            0x0 (thread id)
*******************************************************************************
-------------------------------------------------------------------------------
Class / Object      Routine                Nature of exception           Effect
-------------------------------------------------------------------------------
ANY                 root's creation @9     Unexpected harmful signal (Segmentation fault):
<00005624C649EB28>  (From EB_KERNEL)       Eiffel run-time panic.        Panic
-------------------------------------------------------------------------------

ec: dumping core to generate debugging information...
==================================================

I have not yet discovered any 'core' files as a result ...

On reflection, this my not be a new issue with 21.11 although I have noticed it more often.

Not as yet known, unless there is any connection with changing files, probably including the .ecf configuration file, while eStudio is still running.