I expect this is probably a question for the developers, but perhaps one of the more experienced parts makers may know: is there a reason that the connector0terminal width in (for instance the generic IC) is set to 0? This results at least in Inkscape with making the terminal invisible. When you select it in xml editor nothing changes on the image (although I expect it has indeed been selected) and it is impossible to move around. I assume (perhaps incorrectly) that the generic IC would be an example of good part creation practice. In a user created voltmeter part that I am high jacking, the connector0terminal width is set to 0.56300008 rather than 0 and Inkscape renders it as a dotted line box which is much easier to see when attempting to position it. As far as I can see Fritzing is perfectly happy with either format so I’m going to go with the non zero width version unless there is a good reason not to. I have just discovered that if the connector0terminal is not aligned to the grid, then at least in the schematic view, the pins will be offset from the grid as well. This was quite frustrating as the pins appeared to be aligned (other than the invisible connector0terminal) with the grid in Inkscape.
Peter Van Epp