I'm trying to take a snapshot of a Group and use i...

# tornadofx

[hudsonb]

I'm trying to take a snapshot of a Group and use it as the background for the next frame - however I get some sort of visual artifact as can be seen in the gist. Anyone have any idea what I'm doing wrong? https://gist.github.com/hudsonb/bee3f7f42c50ce15073734d296ec8140