Hi guys,
I have an Airtable base with several tables, including one for “persons” and another for "sectors".
The "sectors" tables link persones to fields specific to a sector.
In the interface, for a specific sector, I had created a Kanban view where the stacking field was set to the ”person” :

However, after changing the interface, I noticed that I could no longer select the "person" field as the stacking field.

I have tried to replicate the table from the older version but I can’t manage to make the “Person” stacking field appear again.
Could you please help me understand what might be causing this issue?
Thank you!
Marino