Weird, I did a quick test and it seems to work for me.
With position you mean the visual xyz location or just the (line) position in the .ldr/.mpd file?
If it's the second then it's correct behavior because that's how stepping works in the LDraw standard. But it should never effect the visual placement.
With position you mean the visual xyz location or just the (line) position in the .ldr/.mpd file?
If it's the second then it's correct behavior because that's how stepping works in the LDraw standard. But it should never effect the visual placement.