You're right, in the Prada Australia thread, one of the members posted a pic of her red bow coming unstuck. I can't remember what the resolution was, but the pictures did not make it look like a minor thing.
Ahhhh yes, been looking for the thread .................still not found it.....
i checked mine very closely with a flashlight and didnt see any glue marks! phew! the center back of the bow appears sewn onto the wallet. i couldnt see any white glue marks on the two ribbons.