GraphViz map has no topology

Since I installed zigbee2mqtt with a Docker images last year I did not have a good experience. For my 150 square meters I installed CC2538 + CC2592 and 4 CC2531 repeaters. Still not working great. Installed it all again sometimes, tried different channels. LQI for every device always showing as zero in node-red. Had good expectations but bad experience.
For a last thing I wanted to try GraphViz map.

Did it and what came out is this:

The map itself seems right. Every device is listed, the data is correct. From the map I seem to be able to get LQI what I can’t see in node-red or home-assistant thought. But the lines seem to connect everybody with everybody. No sign of a topology.

Hope you guys can help.
Kindest regards