[abenedik]

Hm, this is a good find. I would recommend to disable background waiting in case of multiple child views that use master rendering steps. You can also create child views by setting useMasterRenderingSteps to false.

In this case when useMasterRenderingSteps is true, then the same instance of CompleteRenderingStep is used for multiple views and this can call invalidate view at the wrong times.

I will update the code so that it will automatically disable waiting in the background in that case.