When using Jupytext with Jupyterlab 4 and the real time collaboration feature and using a notebook in the %-format, e.g. test.py the collaboration does not work straight away.

The issue is that when creating the link to share the notebook, for example "localhost:8888/lab/.../RTC%3A.../test.py" the second jupyter lab browser instance thinks this is a pure .py file and opens the plain text editor. And collaboration between the notebook editor and the plain text editor is not supported (jupyterlab/jupyter-collaboration#189).

As a workaround one can always make sure only create links to the .ipynb file. Is there a possibility that this works with notebooks as %-formatted .py files as well?