Disclaimer: There is no fixture component file, so I turned it off in Setup, hence my findings may turn out to be not true in case if fixture is used.
Geometry is correctly extracted for toolpath calculation. Your issue appears to be numerical effect which goes away if you use tighter tolerances. I set them to 0.001 and 0.0005 for tolerance and smoothing tolerance respectively which results in better toolpath. That can be "quick and dirty" fix for your problem.
On other hand, I have a feeling that you need to adjust different set of settings (or maybe use different strategy altogether) for operation "Schlichten Auswurf Radien simu" - that wall is very steep, so I think changing tool orientation may provide better results at the end. I do not have any suggestions at the moment as I need to play with it a little bit more to figure out if there is better approach. I will let you know if I find anything.
Andriy.
