Lesson 1 - Tooltip with "Shift Tab" does not work for me

In the notebook, in a code cell, when I press “Shift Tab” a “less identation” command is executed rather than the expected popup of the tooltip window.

I probably traced my problem down to a conflicting key mapping

Mapping 1: “tooltip:launch-console”: { “keys”: { “default”: [“Shift Tab”] },
Mapping 2: codemirror: ‘Shift-Tab’: ‘indentLess’,
Technical details of the mapping in source: https://github.com/jupyterlab/jupyterlab/issues/4803

So I seem to know the cause of the problem, but I still do not know how to fix the problem
since I am not that familiar with Jupyter. In fact, I am a Jupyter-Newbie.

Is my analysis correct?
If so, any (step by step) advice how to fix the problem is appreciated.

Thanks
Ralf

got the same problem in kaggle. if you fixed it could you tell me? :slight_smile: