Hi there. I am using Prism V1 and have used this approach (note: that we have extended the tabControl to allow adding some additional functionality such as a button).
The issue I am facing is that the tab control does not dock properly. the TabControl winds up being the MinHeight/MinWidth.
The tabControl does not appear to dock properly (expecially given that we have set LastChildFill").
How can I get the tabControl to properly dock and fill?