Windows 10 Professional 64-bit, Nvidia GeForce GTX 470.
Broken: Blender 2.79
Worked: Turning on "Separate Units"
Short description of error
When scaling or changing dimensions, over 100 meters or feet, the decimals doesn't show at all. This was not present in Blender 2.78c.
Exact steps for others to reproduce the error
Open .blend file, look at dimensions for the cube.