We have a gallery to select content view (main, abstract, ...)

I select a content zone item, then change the content view.
A MODIFIED message is sent with new metadata set.

The gallery should be refreshed but is not.
The last selection is the selected zone item before changing metadata set.
The current matching selection for gallery is the zone item before changing metadata set.
So the two targets are equals and the gallery is not refreshed whereas it listens to MODIFIED message.
CommonController does not take into account the MODIFIED message.

How are we supposed to do?

We certainly have the same issue for template gallery for pages.