How can I custom input dimensions when drawing a line?

I recently updated to 2013 SP5 and I can no longer add a dimension when drawing a line for the first time. before I can place my starting point, move my cursor to make a straight line but I can't input the dimension. Same for making square sketches or circle sketches. now I have to just make the line, then re-select the line to change the dimension. Is there a way to fix this? I looked in the options and I have input dimension value checked but still can't specify the dimension.