Hi: I have a strange issue here … When I try to scale a form 2% vertically, the form become ultra small? Please have a look at the attached pictures. Btw: This operation works well in Glyphs 2.
Scaling 10% up and later 10% down does not get you back where you started because that is how percentages work and that was causing issues. The new system is reversible. Now, you can scale (right button) by, say, 110%, and later reverse scale (left button) back to the original size.