With the latest 3.1.6 the Connect IQ Device Simulator (on Windows 10 PC) behaviour when developing a Field has changed. The onLayout(dc) is only called once, also when choosing a layout in the simulator with say 3 fields. Previously it was called for every field shown. I cannot find a way around this, e.g. to design and test for specific field layouts, so I had to revert back to 3.1.5.