Seems the crash is almost never happening now. But it remains unexplained as to why the above "Steps to reproduce" would lead to a clean shutdown of gnome-shell. So if this is still a problem then please open a new bug about the shell shutting down without mentioning the crash that happens during shutdown.
The crash is now "Won't Fix" as discussed in https:/ /salsa. debian. org/gnome- team/gnome- shell/- /merge_ requests/ 63
Seems the crash is almost never happening now. But it remains unexplained as to why the above "Steps to reproduce" would lead to a clean shutdown of gnome-shell. So if this is still a problem then please open a new bug about the shell shutting down without mentioning the crash that happens during shutdown.