Potential Bug when duplicating variants

I use the hotkey (CMD-+) for duplicating variants. This allows me to change the format of the first variant and then build “templates” for other variants. If I click CMD+ too fast (so that the keystrokes are still in buffer) and then click SAVE I ALWAYS lock up and have to do a force quit. I’ve lost so many hours of work to this that I just needed to bring it up.

Thanks in advance for any help.