Comment # 2 on bug 1148183 from Bob Vickers

This problem has now been introduced into opensuse 15.1 by patch
openSUSE-2020-74. The patch would not install until I removed calibre.

Before installing the patch release lp151.2.4 of package libicu60_2 provided
libicu, but release lp151.3.3.1 does not.

I presume from Jan's comments it is safe to force the installation of calibre?