I’m not sure yet, but I think it’s possible that I only get this kind of error, when level generation has placed world geometry on top of each other (overlapping), although I don’t see a connection here, since the NavMesh looks good. Not sure, need to test more. Since I want to re-work the whole random level generation approach anyway, I haven’t fixed this overlap issue yet.
I have another (almost related) question though: How do I test, if a location can be reached from a certain origin? Not a random location, but a defined one. I need to check, if a move-order given through a mouse-click can be carried out or not.