SolrCloud is not returning all results

[Scott Carlson]

I'm trying a very simple setup, and I'm not getting the results I would 
expect.

Starting from : https://wiki.apache.org/solr/SolrCloud  example C.   I 
have 4 instances running locally.
I verify the cloud setup in the UI, that there are two servers per 
shard, and they are all green.

I added a document to each of the URLs (four in total).  I then use one 
of the server UIs to query for all the docs.   I would expect that 
executing a "*:*" query should ALWAYS return 4 hits.  Instead it seems 
to randomly return 4, 3, or even 2.

Any ideas?