Are you by any chance noticing this "discrepancy" whenever you're using Icenium Ion
to run your application? Note that although Ion acts as a container app and does not interfere with your app's look and feel, it does not respect most of the project properties and the status bar style is one of them and it would always be visible whenever you're using Ion.
If this occurs whenever you're running your app with a mobile provision (i.e. without Ion), make sure you have rebuilt the project and you would have to re-deploy it. We've added this information as a note on top of the properties dialog:
Changing project properties will not automatically apply them on sync of deployed apps. Please rebuild and redeploy.
the Telerik team
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