How to properly use multiple QVTKOpenGLNativeWidgets

Hi Elvis,
Thanks for the feedback.
I’ll try to dig deeper later and put together a minimal example.
For now, my workaround seems to work so I need to continue with the port.
There’s a lot of tweaks that seem to need to be set.
PS. the commit connected to Translucent assemblies in 8.2.0 helped a lot!