I have created a very simple webapp with ArcGIS Online and am testing it with various browsers (Chrome, Firefox and IE 11). I am running Windows 7 and Windows 8. On both systems my Application will not load in Internet Explorer v11. I cannot zoom, pan, and no layers are loaded. Eventually I get a message about a run time error and having to end the script.
The App
https://lk-heidekreis.maps.arcgis.com/apps/View/index.html?appid=de4b0d86e96a49a2a365213284ad09e0
Are ArcGIS Online Apps incompatible with IE?
I am able to view it in I.E. 11.
The layer is scale-dependent. Make sure you have zoomed in to visible scale.
EDIT: Also make sure you do not run the application in Compatibility View. Compatibility View is not supported.