There had been a multilib issue with .mo files (my fault, I overlooked it when merging changes in the .spec file) and I also disabled 'tests' subpackage, as it doesn't seem to be useful in RHEL.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2017:2066