QGIS » QGIS Application

I'm seeing some strange behavior on a shapefile I'm working with. If I draw a polygon in just the right spot and then save my edits, the polygon disappears. Any subsequent polygons that I draw and commit have the same problem. If I close QGIS, restart, and then add the same shapefile, the shape that I drew is visible, but seems to have issues. I can't always select it with the selection tool, for example.

I initially thought the issue might be that I was drawing shapes that were partially outside of the extents of the coordinate system of the projection on the shapefile, but if I draw other shapes far away from the other features and outside of the projection extents they draw and commit without problems.

A version of the shapefile that seems to be causing the problem is attached.

Steps to reproduce:
1 - Add test.shp to empty canvas
2 - Start edit session
3 - Draw new polygon at approximately the following coordinates (+/- 1,000 ft):
255902, 513277
415154, 514104
411018, 718443
290234, 698175
4 - Save edits

What happens:
Newly drawn polygon disappears. Shapefile is corrupted in some way. No errors to indicate that there was a problem.

What should happen:
Changes are rolled back and an error message is produced. Even better, QGIS handles whatever issue and the shape is committed as drawn.