I am using ArcGIS Engine and would like to display snap settings to the user. I'm using the Snapping Settings dialog (esriControls.ControlsEditingSnappingCommand) to provide the ability to choose which layer and the type of snap, but the layer list is empty. The layers are still technically listed there because they'll appear if you repeatedly click on the names (as you can see in the following image) but that's not something I'd like to put my user through; I'd rather that they be listed all the time.

Any ideas why this might be and what I can do to fix it?