Error when using Transformations Palette

Glyphs
1

Glyphs 1.4.3 (575) OS X 10.8.5

I drew a circle using the Circle primitive, then shortly thereafter had a need to size it slightly. Using the Transformations palette, x-y locked, scale percentage +1%, initial size of circle 300 units. The Info palette shows every other click of the Plus button either lost or gained a unit in size in one direction only.

2

This is an interesting observation. This happens because all coordinates are saved with full precision and rounded. The rounded coordinates are shown and used for drawing the glyph. But if you transform the glyph it will use the precise coordinates. to reset this use Layer > Round Coordinates, or move the whole path one unit to the left and right.