[bug] Scaling using Shift-arrow goes to 1, doesn't accept Zero

Using Shift+Arrow:

goes: 100, 90, 80, 70… 20, 10, 1, -9

Expected: 100, 90, 80, 70… 20, 10, 0, -10, etc


Also, after this happens, I can’t go back to Zero:

I enter 0 and then press Return, but Glyphs changes it to 1

latest beta Version 2.6.5 (1308)