Constraints have wrong orientation and get ignored.

Hey people,

I build a vehicle in blender, which I imported to UE5.
When I looked at the Physics Asset, the orientation of the twist constraint was turned 90° on the z-axis.
I corrected the orientation manually in the PhAT and the bodies behave correctly within their constraints if just the twist was limited or free and both swing locked.
If I then put one swing on limited, that constraint gets strongly ignored. There is still a limit somewhere, but it’s absolutely out of its given limits.
Can you help me figure out what went wrong?
Is my fbx file already flawed or did I do something wrong in Unreal?
Google doesn’t give me any answers to this.

Here are some screenshot of how it looks:





Best regards