I have a Paperwhite 10th Gen. Before the last software update, documents which had not been assigned to a particular collection still showed together with the collections in the 'Collections' Filter mode. This was very practical as you could easily see what had been recently added to your Kindle and still needed to be assigned. Now, after the update, you can no longer tell which docs have not been assigned to a collection, separately. You can only view all docs indiscriminately in the 'Docs' Filter mode. Does anyone know of a way around this ?
I'm unable to check with my Paperwhite at the moment but, if memory serves me correctly, the format is roughly as before so you don't change "Filter" to Collections. Try, All or Downloaded, change "Filter" to "Docs" and "Sort" to "Collections". Again, if memory serves me correctly, you have to have all your Collections actually on the device.