I have normally worked on release 7 IPCC/CRS/UCCX so have not seen this before.
Although all configured services are IN_SERVICE, the 5.0(1)SR02_Build026 HA cluster shows as being in PARTIAL_SERVICE.
On both servers:
The CRS Engine's Subsystem Manager is in PARTIAL_SERVICE but all configured services are IN_SERVICE
i.e. the Database Subsystem, eMail Subsystem, MRCP ASR Subsystem and MRCP TTS Subsystem are not used so are not configured
On the subscriber server
The CRS Cluster View Daemon’s Manager Manager is in PARTIAL_SERVICE but all configured services are up
The Archive Manager is not used
Is this normal?
Yeah, you tend to see that the components under the snappily titled 'Manager Manager' and other parts either appear as greyed or running - presumably because they aren't specifically stoppable. They can be tricky to figure out why they're not running, not least of all because it's not obvious what functions they each perform.
MRCP/DB is normal to be not running, but that Manager/Manager should be fully running.