@Undo what would you think of creating a "Charcoal Dashboard"? (i.e. Charcoal, Blaze, and anything else with one login, being able to switch between products with a dropdown)
Try a private browsing window... I think it's related to a session (maybe they have some site preferences that you can set like white or dark theme, etc)
@Undo I was just thinking that we might want to build future projects for this compatibility so then if we have five or six, it's easy to use all of them at once.