Enter length, it keeps changing it to whatever

I keep trying to make a line of a certain length. Every time I type in the length, it seems accept it but then when I click on the line it’s always 6.5’. I cannot figure out why it automatically keeps going to that length. I tried make a rectangle, it did the same. I would input the dimensions and it would ignore them and set them to something else. Any ideas?

This sounds like the sort of thing people report when they are clicking on the Measurements window before typing the dimensions. Are you doing that? If so, don’t. Start drawing the line, let go of the mouse and type. Don’t move the cursor anywhere near the Measurements window.