Source:
https://www.qcad.org/rsforum/viewtopic.php?f=31&t=4752

According to the changelog for version 3.9.3 the info tools and coordinate display are tied to the current drawing dimensions. For much of my use I prefer to have the dimensions format different. The main reason is that my customers want to see the format in fractions, but when I am drawing I'd rather see the decimal format to make sure what I am drawing is accurate. So I'd really be interested in seeing a separate full configuration of the display and info coordinates.