Thanks Freikland, for the extra steps and details. That helps clarify the problem to upper case or lower case on the title or author name.
I have tried to edit the title and author of a book I downloaded from the web but I cannot replicate the problem. I am using version 3.28 at the moment. I have attached a picture of the edit metadata screen in Calibre. Just to clarify, are you editing the information in the "Title" box or the "Title Sort" box? Or, when you edit the author, are you editing the information in the "Author(s)" box, rather than the "Author sort"? I wonder if it is related to the calibre program searching for the cover image based on title and author name? Does this only happen with purchased books or does it also happen with Epubs you have created from regular text or Word documents? I am new to bug triage (triaging) and I am trying to clarify the source of the problem so the programmers know what area to focus their efforts. Thanks for your patience Have a good day. Glady ** Attachment added: "Calibre Edit meta data screen - Title and Author" https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1758548/+attachment/5180667/+files/Calibre_EditMetaData_TitleAuthor.png -- You received this bug notification because you are a member of Edubuntu Bugsquad, which is subscribed to calibre in Ubuntu. https://bugs.launchpad.net/bugs/1758548 Title: impossible to visualize: Book does not have a format available To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1758548/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~edubuntu-bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~edubuntu-bugs More help : https://help.launchpad.net/ListHelp

