I'd like to use classic inheritance. Let's say A and B inherit from BASE.

I'd like to be able to create instances of A and instances of B, and all should be visible in the same view.

I naively created a tree view using the BASE model, and surprisingly it doesn't retrieve instances of children of the BASE class.

To me that's a basic case of inheritance, but it seems tricky with Odoo, or maybe I'm missing something obvious...