Glyphs freezes in this scenario:
I open a glyph which contains a component.
Than I try to apply transformations filter (metrics > width).
I click OK and nothing happens because I can’t edit metrics of a component (am I right?).
So transformations palette gets blank after clicking OK and the program freezes.
I have to Force Quit.
I am on Lion 10.7.3, Mac Pro 1.1. I use trial version of Glyphs.
P.S. Love Glyphs