R4032Login incompatible with the domain source module

That's weird, I have a website using Domain Access, but I can't reproduce this issue. When I attempt to open the node as a non-authenticated user on domain B, it just redirects to the login form on domain B.

Thanks for the feedback.
In best case, a redirect to the login page of another Drupal domain will result in the destination parameter being lost.
The domain access (and not just the domain source) module might be required to first trigger the 403.
That said, we also have other custom access and tac lite ( https://www.drupal.org/project/tac_lite → ) installed on the project, and I am not 100% sure they are also not required to reproduce (although looking at the stack trace suggests not).
I would have to test the scenario on a clean install, but have not yet had the possibility to do that.