I use jupyterhub with kubespawner in collaborative mode by adding
a jupyter_lab_config.py file with c.LabApp.collaborative = True .
It works well and I can do collaborative edition,
But,
when we share a notebook with tags, the tags are removed.
Reproduce
Launch a pod on jupyterlab (collaborative)
Create a notebook with cell and tags on this cell
Save it
Use jupyterlab-link-share to copy the share link
Open the link in private mode (incognito-mode)
The file doesn't have the tags
If you create a new tag then this tag will be on both sides.