In MacOS on the English keyboard layout copy/paste works when pressing Cmd-C/Cmd-V, but it **doesn't work** when I switch the layout to Russian (Cyrillic). The same applies to Cmd-A (select all), Cmd-Z (undo) etc.
I guess that mentioned functions are bound with hard-coded Latin **chars** - C, V, Z, A etc, instead of **codes** of according keys.