When I create a multi-line function definition in JupyterLab 4 (4.0.0), the indentation is messed up. So when I do a return, the cursor doesn't go to the right place, but always at about 13 spaces or ...

Currently, the line number of the function definition is not correct leading to issues such as #3869. In the Python ast (as well as type-ast) the FunctionDef node we use to, for example, report ...

The one place they are pretty convenient is in languages (like Python) where multiple return values from one function can be used as multiple input parameters to another. But, the use-cases where ...