New Post: Shapefile disappear when zoom in

I am developing a custom GIS application using mapwingis ocx control version 4.8.8.
Everything works well, thanks very much for your hard work on the GIS control.
I have one small issue with simple Shapefile displays, I loaded a very small shapefile and keep zoom in, however, the line display suddenly disappears after several zoom in, if I zoom out, the line appears.

I have recorded a screen cast showing this
http://1drv.ms/1mJRWlk

Shapefile is here: shapefile

thanks,
Yong