DS2019 - Quick Input (?)

Using program to draw countertops/splashes. Typically I can draw the rectangle shape of the counter then add a second rectangle 6" away to make a rectangle for the splashes. For the second rectangle, I will use the same command, hover over one of the existing rectangle corners (grips), then move the curser slightly right. This shows the polar lines, then typically I enter the length of how far away I want the starting point, but now that is not an option??? It worked fine yesterday...Any suggestions?