Docstring window doesn't show return type

[not-my-profile]

Enable Show docstring in the menu or the config. Then:

>>> def foo(x: int) -> str:
...     """Lorem ipsum."""
...     pass
>>> foo(
 
 
──────────────────────
foo(x: int)

Lorem ipsum.

The docstring window shows the type annotations of parameters but it doesn't show the return type annotation in the signature.
I find this to be unexpected because the Python builtin help does of course show the full signature for help(foo).