Yes, even closing a file will show the file dialog.
Here’s what I do:
- Settings: ☐ Layer warnings disabled,
Autosave enabled - Drag a PNG to Acorn
- Crop the image
- Press ⌘S to save or ⌘W to close the file
- Acorn asks “Do you want to keep this new document” and suggests the “Acorn” file format
- I also disabled the system preference “☐ Ask to keep changes when closing documents”
I’m using macOS 11.2.3 Big Sur and Acorn 7.0.2b1.