Thank you Rashida
I have checked in Global Configuration and can confirm that Shared Sessions is disabled for this website.
I note when using SPPB on many other sites that when I am logged in as superuser in the backend that the front end does not show any editing options at all.
In all cases, I always use Shaper Helix Ultimate wth SPPB on top but I am only seeing this issue on one particular site at the moment. (using SPPB 3 as it happens).
I have given you an SU login and URL in the hidden content to show you my experience. This is a site that is under development so is not yet live.
Ideally I do not want to see front end editing tools at all when I am logged into the backend.
Thx
C