Comment # 5 on bug 1203967 from Andreas Stieger

> [  228s] RPMS/x86_64/calibre-6.6.1-668.1.x86_64.rpm
> [  228s] SRPMS/calibre-6.6.1-668.1.src.rpm

Confirmed that the packages now submitted to Factory (SR#1007749,
openSUSE:Factory:Staging:adi:9) fix this issue. So this problem will
self-correct itself in one of the next snapshots when calibre is rebuilt.