Unlike previous versions of progeCAD, progeCAD 2013 has been completely redeveloped from ground-up and includes code from IntelliCAD 7. Although we do not have a specific bug already on file which sounds like your problem, it is possible that your situation is more unique.
Today, progeCAD 2013 has again been updated to 13.0.4 with many important fixes.
Please download the latest version of progeCAD 2013 from http://www.caddit.net/progecad/progecad.php and revert back to us if there is any improvement?
If the problem persists, you should send us an example file, attention "progeCAD Support" to:
progeCAD support, tips and troubleshooting forum. progeCAD works very similar to some versions of AutoCAD. Moderated.