Line labels won't stay rotated

When I add a label to a vertical line, it goes on horizontally. So the label is perpendicular to the line. If I go into Info->Geometry I can rotate the label to 90 degrees to match the line. But now it’s on the line. So when I attempt to adjust it, the rotation is wiped out and resets to 0 degrees. Also when I move a connected box the rotation resets back to 0 degrees. Looks like a bug.