See attached screenshot: why is it not generating the page thumbnails for the document:
Because you don’t have a document displayed in the view/edit pane.
Why do we have to have the document in the view/edit pane to be able to see the thumbnails? Would be nice to be able to see them without having to open that extra window.
Because they’re generated from the document’s contents, which you are not displaying.
Maybe having them cached would eliminate this problem.
Development would have to assess this request.