I drew a circle in Moncha Draw using the circle tool. I then exported it to ILDA. I then loaded it into Moncha. But, it was no longer a circle! One of the segments of the circle was missing so it wasn't a complete cirtcle. It looked like a "C".
I don't know if this is really a bug, but I give it a try.
It possible to (accidently) drag or place points outside of the drawing area, making them impossible to reach. The only way to get them vissible is to move the entire object.
I don't know how the rest of the software deals with negative coordinates.
Maybe there should be a warning popup like "you are about to place points outside the visible area, are you sure?"