duplicated edges (edges removed in UI) when using a custom layout (DagreNodesOnlyLayout)

[cmgchess]

Describe the bug
I'm using the custom DagreNodesOnlyLayout based on this stackblitz.
I have a list of graphs and I switch between the 2 graphs.
I noticed that some edges are missing and when I checked in the html I can see that the number of edges is correct but edges are duplicated and therefore from the UI it looks like edges are missing.
By the way it seems to happen when I transition from a graph to another and when using a custom layout. Everything looks fine in the initial load.

Edit
even tested with this as well customDagreNodesOnly.ts
but the issue persists

To Reproduce
Steps to reproduce the behavior:

1. Go to demo
2. Select 'Scenario 2'

Expected behavior
Graph supposed to look with all edges like

Screenshots

what it looks like

Demo
https://stackblitz.com/edit/playground-angular-17-material-nsu3nd-u5bmtrxb?file=src%2Fapp%2FdagreNodesOnly.ts

ngx-graph version
9.0.1

Additional context
Angular 17