(Win beta 1.0.021) Render as Image screen artefacts

[Jono]

I'm not fully sure what the option 'Render as Image' does, but I'm fairly sure it shouldn't do this (see screenshot below).

To repeat this:

1. draw three rectangles
2. Object > Rasterize
3. Right click and select 'Render as Image'

[VectorStyler]

@Jono Yes, it should not do that. Looks like a bug.