Confirm Closing of Unsaved images - Missing

[Ofnuts]

I doubt it has been put back, because it is unsafe (you can lose work). There are scripts/plugins around that restore the former Gimp behavior (where "saving" as a "flat" format (JPG, PNG, GIF) would mark the image "saved" and so not require the "save as XCF" when quitting). For instance: save-export-clean.py that you'll find here: https://github.com/akkana/gimp-plugins/

But you are shooting yourself in the foot. In 2.6 times numerous folks came to the forum asking for help after they had saved an image as JPG and quit without re-saving as XCF.