Geometry set to ByParent not showing correctly in Hidden Display

I have noticed that some geometry in native Rhino blocks, that has its display and print colour set to ByParent, is printing in black when in hidden display mode. This does not seem to affect points. I haven’t checked line work. And it does not happen if the block is part of an element style. Is this a ‘feature’ or a bug?

Shaded mode with ‘PrintDisplay’ on:

Hidden mode with ‘PrintDisplay’ on:

Hi @gabrielsorensen, It’s a bug. In Hidden display mode, the geometry inside the block, with the Print color set to “By Parent”, should be printed in the Parent color, not black. We will try to fix this.

Fantastic. Thank you Francesc