I'm having some trouble with a custom control. It's based very heavily on: http://www.spikie.be/blog/post/2015/04/02/.aspx
In addition it's got bits learnt from the BindablePicker example I've found on the forums. This control needs to make use of a DataTemplateSelector.
Basically, if you have two on the same page - it creates a mess. I can only think it relates to the use of static. We use our own stack for navigation, when you hit back and say the screen you were on used the BaseWrapPanel and so did the one before, the two panels ItemsSources get combined.
Any pointers in the right direction would be great!