Strange result on a graph traversal

[Денис Черемисов]

I have latest docker image of ArangoDB.

I have two collections in my DB test: edges and nodes, defining two-loops graph

1 → 2 → 3 → 4 → 5 → 6 → 1

1 → 11 → 12 → 1

Simple query

FOR item IN 1..100 INBOUND "nodes/1" OUTBOUND edges

    RETURN item

Returns each node twice. I know 

OPTION {uniqueVertices: "path"}

will solve this, but I thought default {uniqueEdges: "path"} should take care of it itself.