The display width is
- one less when the upper limit is > 0 and
- two less when the upper limit is < 0
While this is not a "problem," the first limit (Upper) is left justified because it has the Focus while the 2nd limit (Lower) is right justified.
This can result in some confusion when reviewing these values since you must manually right justify the first limit to see what it really is.
SUGGESTION: I would simply widen the number display width 4 characters.