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This is the architecture of the application:
The MainPage is set to a MasterDetailPage (MDP).
The Detail of the MDP is set to a ContentPage, in which the Content is then set to a CustomMap, which inherits from a View that has a custom MapViewRenderer, which inherits from a ViewRender<CustomMap, MapView>.
The Master of the MDP is set to a NavigationPage which has a ContentPage. This ContentPage's Content is set to a View, which controls the Icons that you see in the demo application, which essentially make it look and behave like a TabbedPage in iOS.
The tabs allow us to render ContentPages that then have the ListView and associated controls (Search, etc).
When loading a ContentPage for the first time the ListView results do not appear. When navigating away from the ContentPage and back again the results then appear just fine.
A Screencast of this issue can be found here:
We'd be happy to help you resolve this issue. Please help us by attaching a reduced reproduction to the bug by starting with a clean Xamarin.Forms project and adding just the code necessary to demonstrate the issue. If you'd do this for us we would very much appreciate it. If you are able to reproduce the issue without modifying the platform specific projects that would eliminate a number of possibilities and likely expedite a resolution.
Xamarin Forms Team
This issue will be closed due to a lack of response. Please reopen this and attach a minimized reproduction project if the issue still exists as of the latest prerelease or nightly build.