This isn't something that can be fixed. This is also only specific to clothing item models. The default position when created is world co-ordinates 0,0,0, which briefly appear here before the codes runs to set their actual position on a player. 0,0,0 just happens to be a position inside the map. I could move the map axis, but that would break dupes and all sorts of other things. It's really not that big of an issue either.