Reproduction steps:
1. Dlux > Yang UI > expand network-topology rev. in API tree > expand config > click network-topology to load network-topology button in the form.
2. Expand arrow expander in the form to load topology-list button.
3. Click + button to add topology id to topology list. Add 3 topologies with ids t1, t2 and t3.
4. Click filter icon and create 2 filters: filter1 with topology-id t1 and filter2 with topology-id t2. Activate both filters and click OK to filter in topology lists. Only topology t1 and topology t2 are displayed, topology t3 is not displayed.
5. Click List of nodes button.
EXPECTED BEHAVIOUR: The List of nodes box contains only currently displayed topology list, that is t1 and t2 topologies.
BUGGY BEHAVIOUR: The List of nodes box contains t1 and t2 topologies, but apart from them it contains another topology with no id that is not displayed in the form. When this no-name topology is doubleclicked, it appears in the form. Then when topology is deleted from List of nodes box, the remaining topologies somehow get the same id and exclamation marks appear marking that the duplicate index is used.