I did my own annotation by inhereting GeoPositionNode.
It works fine.
Now i need a camera specific behaviour. Thus I add a cull callback and do my stuff in it.
My problem is that I need this callback to be always executed.
By default it wasn't executed if it was not in the camera frustrum.
So I add setCullingActive(false) to the geode.
Now it is executed almost always, but it remains some cases where the cullcallback is not called. Why?