[OpenLayers-Users] displaying circle on Bing-layer

[Wolfgang Wienke]

Hi,
I try to show circles on a map with a bing "Aerial"-Layer.
In OpenLayers V3 the examples are working fine.
But when i change the layer in the example to the bing layer, the circle 
is no longer displayed.
In Open layers V2, the circle is only shown on a base layer. It does not 
show on a Bing Layer.
Is this a feature, or where are my mistakes?
-- 
                                mit freundlichen Grüssen

                                      Wolfgang Wienke