go_back in an application with ShellRoutes seems to pop the root navigator

[buchen]

In my application, I am using a ShellRoute (which creates nested navigators).
It looks to me that go_back() always pops the root navigator instead of the shell navigator.
This causes it to exit the entire shell (e.g., back to a welcome/login screen) instead of navigating back within the shell's route stack.

I get the expected behavior if I tell flutter skills to not use the go_back tool but tap the back button instead.