Well, I rather suspect the GTK -> macOS interaction wherever this happens (my guess is Pango macOS backend).
Yeah, likely, and I'm afraid thats about as helpful as I can be with macOS :grin:
@djwashburn does the ctrl+cmd+spacebar insert an emoji that doesn't display but you can copy out the file, or are you reporting that it doesn't insert one either, seems @techee and I read your report differently.