Upon further testing I also discovered the right click menu is also displayed if I create a TextBox at runtime with a right click event but not if I create a sprite at runtime with a right click event.
I have updated both the example and the example project on the server. Right clicking Sprite 1 creates a ComboBox with the accompanying right click menu as before. Right clicking Sprite 2 creates a TextBox with the accompanying right click menu. Right clicking Sprite 3 creates another sprite without the accompanying right click menu.
I also discovered creating a button with a right click event also creates a right click menu but I did not include this in the example.
Jason