> That's the bit that puzzles me today - the save completes with no errors, which seems to mean that the server image sent back a happy-happy response. Which surely ought to mean that it is indeed happy....

>From what I see, the list of releases between website and in-image
browser are consistent.   7-version23 is the latest.  If you have 8-24
it's only in your image and you should re-do Create New Release after
selecting 7-version23.