When I use Memgraph 2.2.0 (Docker using memgraph-platform image) and I run the SHOW REPLICATION ROLE
in the result column says replication mode
and is showing replication role. This seems off to me, or are ROLE and MODE aliases?
As @PhobosFerro has noticed, this was a bug that was Fixed with release of Memgraph 2.3.1. You need to update your Memgraph Platform.