I can't download any books/files I saved with iCloud in the Apple Books app on my Mac anymore (it worked before though). Books from the Apple Books store will download fine. I can also download all books saved in iCloud with iOS without problems. There is no error message, instead the Download will apparently start as indicated in the sidebar:
However, the download will never process at all (again, every other download works without issue).
Things I tried that didn't work:
- Rebooted the system
- Logged out and back in with the corresponding Apple account
- Disabled and reenabled syncing for Books in the iCloud settings
- Removed all
~/Library/Application Scripts/com.apple.iBooksX.*
folders and rebooted - Removed
~/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks
folder and rebooted