If your book collection doesn't have adequate metadata, these pages are empty, and don't even show some kind of placeholder text. So they look broken.
I want to tackle this and understand QML/Qt better by doing this small fix.
A possibly relevant merge request was started @ https://invent.kde.org/graphics/peruse/-/merge_requests/29
Git commit 3d67cf4db740cf8ded5900da82c8ed09a62a7866 by Remko van Wagensveld. Committed on 16/06/2022 at 18:57. Pushed by ngraham into branch 'master'. Add placeholder text to empty category pages This commit adds a PlaceholderMessage to the Bookshelf which is shown if CategoryEntriesModel.count == 0. This occurs if e.g. there are no comics with the according metadata in the library. M +10 -0 src/app/qml/Bookshelf.qml https://invent.kde.org/graphics/peruse/commit/3d67cf4db740cf8ded5900da82c8ed09a62a7866