Items removed from library return on restart

[#1]

After I read a book, I return it and remove it from the library. However, when I restart Adobe Digital Editions, the book is back in my library, often duplicated. I have seen a couple of old posts on this with no replies. Seems to be a fundamental bug. I'm using the app on Mac OS Catalina 10.15.4 on a MacBook Pro.

[#2]

After I read a book, I return it and remove it from the library. However, when I restart Adobe Digital Editions, the book is back in my library, often duplicated. I have seen a couple of old posts on this with no replies. Seems to be a fundamental bug. I'm using the app on Mac OS Catalina 10.15.4 on a MacBook Pro.