Monitoring : Neo4j_ids_in_use in Casual Cluster show different Number

I have setup a casual cluster with 3 servers with monitoring enabled.

However Neo4j_ids_in_use Metrics shows different number in each server for nodes , Relationships and Properties.

I was expecting the same number of nodes on each server. Or is this a actual behaviour ?

I believe this can occur due to the way ID use is handled.

more information here: https://neo4j.com/developer/kb/how-deletes-workin-neo4j/