UE5 physics simulation effict is wrong

I put a sphere into defaut level , start simulate physics, and when I rotate the floor ,the sphere will not roll.
I record the screen on UE5的物理模拟bug_哔哩哔哩_bilibili

funny video :slight_smile:
I’m having similar issue but some works 1% and 99% time doesn’t work

To see the sphere roll youd need to map some sort of non uniform material…
And even then it could be bugged.