If GNOME Shell crashes it automatically disables all extensions in case they were responsible. This can be confusing upon the next login, though, as there’s no visible explanation of what happened. For crashes not caused by extensions it can be simply unhelpful.

A simple notice upon login is a welcome convenience:

screenshot of notification
#!/usr/bin/env bash
set -Eeuo pipefail

[[ "$(gsettings get org.gnome.shell disable-user-extensions)" == 'true' ]] || exit

case "$(notify-send --urgency 'critical' --icon 'extensions' \
'Extensions have been automatically disabled.' \
--action 'enable=Re-Enable' \
--action 'settings=Settings…')
'enable') gsettings set org.gnome.shell disable-user-extensions 'false';;
'settings') gnome-extensions-app & disown;;