Layer type="Conainer" not firing onhover and onout

I use a layer as contianer with opacity 0.8 black.
In the container, there are several other image layers as the container's children.

Even if I set onover, onhover, onout on the container,
those events are fired on the empty container layer, but only visible image layers.

How can I fire onhover and onout on the container??

Helps a lot. Even I've seen this. I didn't know exactly what it is.
Thank you, Klause.

Quote from klaus.krpano

bgcapture="true"

Quote from klaus.krpano

Add:

Code

bgcapture="true"

to the .

See:
https://krpano.com/docu/xml/#layer.bgcapture