Hey guys

I'm working on a game where I have to throw a bouncing ball on walls. I have some sort of aiming assistance where I simply draw line from the current ball position to the raycast hit position Then using the raycast hit normal, I compute the reflection vector and display another line starting from the hit position and following the reflection vector direction.. Anyway I'm sure you got my point.. This works perfectly, the raycast always returns me correct Hit point & Reflection vector

But on the physics side the ball doesn't follow the same trajectory at all.. I've tried to turn off the gravity.. same issue I've also tried to use a point (instead of a sphere) by using a tiny radius on my sphere collider.. same issue..

Even with a simple case where I throw the ball in the up direction, with a wall at a 45 degrees angle The ball doesn't bounce on a 135 degrees angle like the raycast does but something around 150..

Am I missing something obvious here ??

Thanks a lot for any kind of answers.. I'm really stuck here and don't write to write my own physics engine ;-)