Trouble with Undo button

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.

Make sure you send the app crash reports (the ones that pop up when you restart the app).

I sent prior to the post, the most recent crash report and mentioned in it that my undo stopped working.