Dear Sebastian,
I believe this detail should not matter here.
Maybe you will be able to get some insights about which settings have not been adjusted appropriately when running our fork of the Worldmap Panel [1,2,3]. It has some additional features which will give you better feedback when toggling the configuration settings.
Feel free to get back to me if you will not be able to get this running. Sharing some excerpts of your data and screenshots of your configuration settings might also help here.
Good luck and with kind regards,
Andreas.
[1] GitHub - panodata/panodata-map-panel: Map Panel for Grafana with improved convenience, robustness and features. Friendly fork of the original Grafana Worldmap Panel. Currently not maintained, but verified to work up to Grafana 9.
[2] Developing Grafana Worldmap NG - Benutzerschnittstelle / User interface / API - Hiveeyes
[3] Giving the Grafana Worldmap Panel some love