I have updated to the Version 1.4.4 (602) of glyphs, but started facing trouble with the undo button.
A little over an hour working in the programme the undo button stops working. I still can see the grey pop up say what it is un-doing but the action does not happen.
I tried restarting my machine, quitting glyphs and restarting it again but it didn’t work. So far, it has happened twice and the second time glyphs crashed.