Nothing is wrong with the numbers being used, it is just the way I was looking at them. The numbers in the bit-map you use are all 5 dots wide except for the number "1". It uses a single vertical column of dots on the right side. Since the 4 dots to the left (that are used by the other numbers) are not used, it made it appear to me that the number "1" had shifted, when it really hadn't.
I do use another skin that uses bit-map numbers. The number "1" in that skin is shaped so that all 5 dots are used and it doesn't appear to shift in relationship to the other numbers.
I'll install v1.5.1 and see if what I'm badly trying to explain is still present.
P.S.
The shape of the bit-map numbers in v1.5.1 is the same as in v1.4. This still looks a little odd to me, but now I know what I'm seeing and why.