We have noticed that the persistent user modifications on pages stored in cookies are lost when a user is logged out intentionally or not. This is not ideal when users who do not have page editing privileges are spending their timing customizing their views. This is directly affecting our Shotgun adoption rate within the studio.
We are sure that you are aware of this issue and that this choice might be deliberate on your end, but as it is affecting our users' experience.
We definitely want our pages to be curated and avoid having artists create their own as it will disconnect them from the ones we provide. Of course, we are trying to design these pages to satisfy everyone's needs, but there are always edge cases. That is when the user cookie stored modifications come into play. Users understand and love this mechanism that gives them some control over what they see and the ability to revert their changes at any time. On the other hand, having those modifications dropped when logged out, always comes as confusing and has been described so far as a "Shotgun Bug".
If the goal of the cookie drop on logout is to provide a feature to force artists to lose their local changes, then it should probably be implemented as an administrator Action Menu Items on pages and not automatically enforced. This would allow administrators to be in control over when they want this to happen instead of having it forced on the users.