BLN level problem

Hi all!

In my watch faces I change minutes color when batt gets <10 from main color to dark grey.
Now it works fine up to 1%, but when batt gets – % (I can see it on facer designer, never saw the problem on the watch as I never came to – %), minutes digits get into undefined X position…
So my question:
Is that my mistake in formula or it is how online facer desing displays – bat and I don’t need to worry because it will never happen on real watch - it will just die…

Below screen shot to visulise this issue

Honestly mate its a thing that for some reason it gos wrong at 0 but as you say it cant happen as the watch would be dead by then