In AutoCAD 2013 there is a new bug introduced. When running Wipeout in a non WCS UCS the first coordinate is not drawn where you click. Time for a hotfix or to be included in AutoCAD 2013 SP1. Workaround is to draw a rectangle or polygon and convert it to a wipeout.
This is the expected result.
But here is the erroneous result with the first point picked ending up way off.