For a better understanding of the issue: Open this sample: http://help.arcgis.com/en/webapi/javascript/arcgis/samples/mobile_citizenrequest/ in web developers 'responsive design view' of firefox. Use a portrait view, click 'Add' and rotate to landscape view. After that click one of the feature types to get back to the map. But the base map has disappeared! What's the reason for that? Has anyone an idea? You can also check this sample on your phone or pad which results in the same problem. Thanks for any suggestions. Wolfram
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