import fails to display a correct graph

[oupala]

When I dot import the following dotfile, the file is imported but all nodes are over each other. Why does this graph does not display correctly even if I enable force?

digraph {
    node [label=another,labelSize=12,labelPosition=LabelTop,labelColor="#ffffffff",labelIsVisible=true,position="0 0",velocity="0 0",manyBodyStrength=-100,gravityCenter="300 200",gravityStrengthX=0.05,gravityStrengthY=0.05,fixed=false,color="#56c785ff",radius=8,borderColor="#56c785ff",borderWidth=0,opacity=1,inBags="[]"]
    edge [label=youhou,labelSize=12,labelColor="#dcdcdcff",labelIsVisible=true,distance=50,strength=0.7,thickness=3,color="#c739f11225",opacity=1]

    "1"[label="this is a label",labelSize=12,labelPosition=LabelTop,labelColor="#ffffffff",labelIsVisible=true,position="290.92955218613895 173.5050804928229",velocity="0.0007100643291223718 -0.00018850646376560655",manyBodyStrength=-100,gravityCenter="300 200",gravityStrengthX=0.05,gravityStrengthY=0.05,fixed=false,color="#c739f11225",radius=8,borderColor="#c739f11225",borderWidth=0,opacity=1,inBags="[2]"]
    "2"[label=another,labelSize=12,labelPosition=LabelTop,labelColor="#ffffffff",labelIsVisible=true,position="308.6885490561512 225.19306853745385",velocity="-0.0006347858947882027 0.0002732706863300056",manyBodyStrength=-100,gravityCenter="300 200",gravityStrengthX=0.05,gravityStrengthY=0.05,fixed=false,color="#56c785ff",radius=8,borderColor="#56c785ff",borderWidth=0,opacity=1,inBags="[2]"]
    "3"[label=another,labelSize=12,labelPosition=LabelTop,labelColor="#ffffffff",labelIsVisible=true,position="245.21153926807796 200.05832387902566",velocity="-0.000039569480393650613 -0.0014904019046544184",manyBodyStrength=-100,gravityCenter="300 200",gravityStrengthX=0.05,gravityStrengthY=0.05,fixed=false,color="#56c785ff",radius=8,borderColor="#56c785ff",borderWidth=0,opacity=1,inBags="[]"]
    "4"[label=another,labelSize=12,labelPosition=LabelTop,labelColor="#ffffffff",labelIsVisible=true,position="355.43398943903384 200.72204237929031",velocity="-0.0000654231664085913 0.001343827964491885",manyBodyStrength=-100,gravityCenter="300 200",gravityStrengthX=0.05,gravityStrengthY=0.05,fixed=false,color="#56c785ff",radius=8,borderColor="#56c785ff",borderWidth=0,opacity=1,inBags="[]"]

    "2" -> "4"[label=youhou,labelSize=12,labelColor="#dcdcdcff",labelIsVisible=true,distance=50,strength=0.7,thickness=3,color="#c739f11225",opacity=1]
    "1" -> "3"[label=youhou,labelSize=12,labelColor="#dcdcdcff",labelIsVisible=true,distance=50,strength=0.7,thickness=3,color="#c739f11225",opacity=1]
    "1" -> "2"[label=youhou,labelSize=12,labelColor="#dcdcdcff",labelIsVisible=true,distance=50,strength=0.7,thickness=3,color="#ff8c1aff",opacity=1]

    graph [bagId="2",label="les bleus",color="#2a7b9aff",hasConvexHull=true]
}

I tried to remove the position attribute so that kite can place each node at a random place.

It seems that the import fail when a node has no position, or if 2 nodes have the same position.