One edge croses port and node if two edges are connected to the same port

Describe the bug
If a port is connected to two other ports, the edge routing sometimes crosses the port as well as the node.

Minimal Example:

algorithm: layered

node n1{
    port np1
}
node n2{
    port np1
}
655F

node n3{
    port np1
}
edge n1.np1 -> n2.np1
edge n2.np1 -> n3.np1

Expected behavior
The Edge should be routed around the node and partial joined with the second edge, like it was the case in ELK 0.6.0:

Screenshots

ELK Version
ELK Version: 0.6.1+

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