Drawings not aligning to assembly configurations

I have an issue that I can't see being anything other than a bug. I have several configurations within my assembly, which uses several configurations of a part. The part configurations have sketches on them, which I have used to align the part in the assembly (I have drawn a line that indicates the centre of mass at different angles).

My issue is, I can align everything perfectly in the assembly, but in the drawing, when I change the configuration, the drawing does not replicate the assembly. There are small gaps where there should be none.

Stage 2 in assembly, nice and aligned to centre of mass sketch

Stage 2 in drawing, not aligned (line should be vertical)

It seems that the drawing is updating the assembly configuration, but not the part configuration within the assembly.

SolidworksDrawings And Detailing