On Programmers.SE I noticed an edit by a user of 4K reputation that I feel changes the meaning of the original question (Revision 2) and I would have liked to roll back. However having not enough reputation here, my only possibility has been to click on “source”, copy the source block, and make a suggested edit with the contents of the original revision.
It would be IMO convenient for users that don't have enough reputation to have a way to indicate that they find an edit is not valid.
Thanks