I saw the same behavior after upgrading gromox to 2.8.76.e5fd1df:
gromox-2.8.76.e5fd1df-lp154.39.1.x86_64.rpm
gromox-debuginfo-2.8.76.e5fd1df-lp154.39.1.x86_64.rpm
gromox-debugsource-2.8.76.e5fd1df-lp154.39.1.x86_64.rpm
The problem resolved when I reverted back to the versions from April 25th:
gromox-2.8.50.4949313-lp154.34.1.x86_64.rpm
gromox-debuginfo-2.8.50.4949313-lp154.34.1.x86_64.rpm
gromox-debugsource-2.8.50.4949313-lp154.34.1.x86_64.rpm
Edit: I also reverted the grommunio-dav package from 1.3.7.c46ff89-lp154.1.1 to 1.3.3.66c7a4a-lp154.1.1