No, i am in 3D. I have this phänomenon sometimes, but in this case I cannot need it.

Hi Rudl, there are some different options for how the 3D view rotation works, go to Options > View > "Rotate/Pan/Zoom options" and try Roation style: "Free rotation" and see if that suits you any better than the default "Rotate around world z axis".

- Michael

Thank you very much. Don´t know, why i changed the z-axis rotation.