I've noticed that when I create auto generate CRUD pages the actual pages don't always seem to be created.
It seems linked to the fact that if I close the Edit Data Source screen straight after clicking Finish button they don't appear and are not generated. If I try again but wait a few seconds before closing the screen they do. I've managed to reproduce several times.
Generate Pages for CRUD is ticked, Overwrite not ticked. The new table appears in the Entities list.