I don't have Google services installed on my phone.
I tried logging into Gmail in the Thunderbird app. It forwarded me to a Vanadium page (which I thought was something like a private thunderbird's web view) where I entered my gmail login details, and then I suddenly became logged into google account in every other app, including Vanadium itself.
Could you please explain how this single login works, and is there a way to separate such logins between different apps, where other apps don't even know another google account exists and is being used by other apps?
I remember similar behaviour on iOS where after logging in into YouTube app, I suddenly find my self logged in into Safari.