[Quoth]

I've looked on my Amazon Account. Nothing strange there. It also has the Collections and numbers of titles in them, though the numbers of titles don't match the PW3 collections.
The actual number of Collections on the Web Site is many times what the DXG has. It of course has a completely different way of managing and displaying collections, though it works.

I switched between ALL and DOWNLOADED and Ticked and Unticked Books in Filter and suddenly there are now 13 Collections in ALL Filter menu, but greyed out still on Sort.
No Collections on either Menu when DOWNLOADED is selected

It seems it doesn't recognise locally added books as being in the Collections. I have ONLY locally added books on the Kindle. I can Add a local book to a Collection and the Title count goes up.
But it's not affecting the Title count on the ALL tab with Collections Listed. Only the books on the Amazon Account library are counted.

So Collections are now useless for locally added books. Which is 99% of my books as many are old PD classics or ones we publish.

I've zero interest in Downloading via WiFi. All the books I buy from Amazon are Downloaded to PC and transferred by USB (sideloaded). Apart from the fact I had to select , unselect and select in ALL - Filter to get Collections to show at all, they now only give the Books you COULD download via WiFi /Whispernet. The SAME book transferred locally is ALSO showing up as one that needs to be downloaded.

The Cloud stuff has gone a step too far. I do not want a Terminal to Amazon's Server.