When you add a new dataviz page block, it loads with a dropdown of all the available visualizations. If you fail to choose one, I believe its previous behaviour was that it would give you an error and not allow you to proceed until you selected one. Now, it doesn't give you a warning, happily saves the page, and simply selects the first available visualization in the list.
As usual, not totally sure if this is a module issue or a core issue - but I think we want to require a selection before saving the page.
When you add a new dataviz page block, it loads with a dropdown of all the available visualizations. If you fail to choose one, I believe its previous behaviour was that it would give you an error and not allow you to proceed until you selected one. Now, it doesn't give you a warning, happily saves the page, and simply selects the first available visualization in the list.
As usual, not totally sure if this is a module issue or a core issue - but I think we want to require a selection before saving the page.