Hello everyone, I am facing strange behaviour from the dimensions command. I have the same dimension style set on two seperate files. To best convey the issue review the attached images. 

In image one the dimensions are behaving as i would like the to: i select the top of the linear line and drag down the dimension line to the center of the linear line and the dimension line aligns vertically to the center point. 

In image two the dimensions are behaving strongly: i select the top of the linear line and drag down the dimension line to the center of the linear line and the dimension line appears to be aligning at an angle. 

This dimension line stretching at an angle and not perpendicularly is an issue if i attempt to do anything with the dimensions in that file. 

Ortho mode is turned on. 

Any clues as to what may be causing this ?