Spring arm automatically rotating 90 degrees?

This bug appeared today, I don’t know what I did. So on beginplay my spring arm rotates 90 degrees. It doesn’t happen if the parent isn’t simulating physics. It also isn’t caused by collision or blueprints, because I unplucked all of them.
Here’s a video

Help, please :slight_smile:

ok so my bad, I didn’t apply the rotation in blender.