Moving a Notebook to Next makes it disapper

I discovered a bug.
I had created an item like a notebook.
Later I moved it to “next” (drag & drop)

From that moment it disappeared.

I can only find it using tags.

See screenshoot:

Thanks for reporting this. It is a bug.

Edit:
Actually it seems to be by design. Moving a notebook to “Next” converts the notebook and all it’s notes to actions.

Changed the title and category to make it more accurate.