Phoenix group by queries returning non-distinct group by results

[#1]

We have a query that looks like this:

SELECT security, count(*)
FROM assets
WHERE
	src = 333 AND
	account_id in ('15784','15542','15662','15660') AND
	effective_date = TO_DATE('20170109','yyyyMMdd' ) AND
	security in (10202, 23423, 54564)
GROUP BY security;

This is a pretty simple group by query. The odd thing is that this returns the same security value multiple times. Has anyone ever seen this?

security	count(*)
10202	102
23423	10
54564	8
10202	3
23423	4
54564	6
10202	3
23423	2
54564	1

Here's the query plan which is what I would expect with the distinct.

PLAN
CLIENT 20-CHUNK PARALLEL 20-WAY POINT LOOKUP ON 675 KEYS OVER ASSETS
	SERVER FILTER BY FIRST KEY ONLY
    	SERVER AGGREGATE INTO ORDERED DISTINCT ROWS BY [SECURITY]
CLIENT MERGE SORT

[#2]

I'm still puzzled by this. How can an explain plan with a distinct on "security" return the same "security" multiple times.

PLAN
CLIENT 20-CHUNK PARALLEL 20-WAY POINT LOOKUP ON 675 KEYS OVER ASSETS	
	SERVER FILTER BY FIRST KEY ONLY    	
	SERVER AGGREGATE INTO ORDERED DISTINCT ROWS BY [SECURITY]CLIENT 
MERGE SORT

[#3]

Has anyone seen this? Is Phoenix production ready?