I’m playing with this now. The graphic and the circular mask were grouped when imported - but yes it masked and allowed about 10% as you show. I ungrouped and moved the circle mask to the Knot and it was all there.
I don’t have any Inkscape experience but several of the devs do. I’ll ask the dev team what the difference is and if this is expected and known behaviour.
In the mean time Check out this video on LightBurn’s mask tool.
