Spacer Plugin Malfunction @ Menu Bottom - Problem w/Plugin at bottom of menus

I have already ensured that the "placebar" was visible and in the correct spot. Actually, in testing, there were several spots within the menu that I couldn't place the spacer - it would just pop back to where it originated. It seems however, that the bottom spot is consistently problematic.

Also, when working directly in the XML, you have complete control. I'm not sure how much of the XML was intended to be directly editable, but I have worked with it before to complete precise placement and it works fine. But it gives me the same results with the spacer at the bottom as does "drag and drop".

Thanks for trying though.