After upgrading MacOS to 12.1, Glyphs 2 [copy glyphs name] cannot be copy successfully，It’s normal in MacOS11.6. Glyphs 3 is normal in MacOS12.1.
What version of Glyphs do you have? This should be fixed in the latest version.
2.6.6 (1352) cannot be copy successfully,so I update to 2.6.7(1357),it also cann’t.
It is fixed in Glyphs 3. I’ll see if I can fix it in Glyphs 2.