CLONE -Advanced Preview: username displayed in the toolbar + incorrect username in the template

Another thing. this is not easy to understand how to remove your current aliasing. I would make the username in the toolbar "ADUMAS" clickable. As soon as clicked this will switch again to the ADUMAS standard preview behaviour and cancel the current aliasing.

We could also think about keeping somewhere in the session the latest aliasing used. So this would keep the two "aliases" (the principal and the "preview") such as ADUMAS (GUEST). One would be active (black) and another one inactive (grey). By clicking on the grey one this would switch to the other user. So you would be able to very rapidly "mount" your guest user and then be able to rapidly preview the current page for guest or for yourself.

If the push the paradigm a bit later we could use such "aliasing" as a bookmark toolbar. So an editor would be able to "mount" serveral aliases in preview mode such as ADUMAS (guest / John / Steven) and be able to rapidly switch from one to the other without having to go each time in the advanced setting modes. We could even serialize that in the Preference API.