Angled line length command not working.

Ortho OFF, Polar/Etrack/Esnap ON. If I draw a horizontal or vertical line and input (command line) length - it works fine. If I draw an angled line and input length, the line snaps to horizontal or vertical. The input line length is accepted but the drawn angled line snaps to horizontal or vertical orientation. No problem merely drawing an undefined (length) angled line. Comments? Suggestions?