I'm seeing this error when clicking on the "Purchases" button of a product. I have tested this in two different dev environments:
Uncaught Error: QWeb2 - template['ListView']: Runtime Error: TypeError: dict.column.width is not a function
Edit: Odoo enterprise
Edit 2: This error is also on the Odoo Enterprise Demo site.
I've logged it. I'll let you know if there is an answer.
If you haven't already, you can tell them this DOES NOT happen with the Community edition, just the Enterprise edition.