Canvas3D in a SpringLayout

Hello all,

I am attempting to use my Canvas3D in a SpringLayout.
I have it appearing by itself in the SpringLayout, but when I add
more components, it seems like the canvas’ size gets set to 0,0.
I can explictly set the preffered size to (w,h), and it appears. (No rescaling though).

Any suggestions?

Thanks
Zak ??? ??? ???