DatabricksUnityCatalog: notebooks lineage not showing up in table/view lineage or lineage graph

[Mikes]

Notebooks lineage not showing up in table&view lineage or lineage graph.

I created two table and one view from a notebook by following the doc: Capture and explore lineage 

All lineages work fine, except the notebook lineage: 

Lineage graph: 

Here is my notebook: 

Environment: Azure DatabricksUnityCatalog, Premium (+ Role-based access controls), Lineage enabled, SQL Warehouse

Did I miss anything or do something wrong with it?