spatial.algo.intersection does not work as expected

[kvegter]

In this query below I try to see if polygon 1 intersects polygon 2
match (geoc:GeoCollection {id: "1234"})-[:HAS_ELEMENT]->(s:Shell) match (geoc)-[:HAS_ELEMENT]->()-[:HAS_ELEMENT]->(h:Hole) where not ((s)-[:HAS_ELEMENT]->(h)) WITH s.polygon as shell, h.polygon as hole return shell , hole , spatial.algo.intersection(hole,shell) as intersects , spatial.algo.intersection.sweepline(hole,shell) as intersectsSweep , spatial.algo.area(shell) as shellArea , spatial.algo.area(hole) as holeArea

In this example (just plain 2d) the shell is within the hole. the result of this call is empty:

this is the input:
shell polygon:
[point({srid:7203, x:6, y:5})
,point({srid:7203, x:9, y:5})
,point({srid:7203, x:8, y:10})
,point({srid:7203, x:6, y:5})
]

hole polygon:
[point({srid:7203, x:4, y:3})
,point({srid:7203, x:11, y:3})
,point({srid:7203, x:11, y:12})
,point({srid:7203, x:5, y:12})
,point({srid:7203, x:4, y:3})
]

background I want to find shell's which fit in a hole of another polygon...