Physics Bodies for bones that are scaled in the Anim Graph are not scaled properly in game. This seems to cause a jittering effect when simulating bodies.

User Description:

I blend physics into the animation of our characters when they are hit, however when I scale up character bones in the animation blueprint, they jitter when the blend weight is inbetween 0 and 1.

I don't really know what I am doing wrong, I have played with the collision settings of the physics asset but with no success. It also seems that if I scale up the head of the character instead of the torso the head doesn't spaz out which is weird.

Would really appreciate any help on this, since physics blending looks awesome on hit, but so does scaling up the bones as our characters get stronger. It would be a shame to have to do one or the other.

Steps to Reproduce

1. Open the attached test project
2. PIE
3. Press the F key to simulate physics on the top half of the body
4. Watch for the jitter/slinging arms
5. Open the console > Enable 'Show Collision'

Results: The Physics Bodies for the upper and lower arm aren't sized to the bones

Expected: For the Physics Bodies to be scaled in size along with the bones

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Won't Fix
ComponentUE - Simulation - Physics
Affects Versions4.
Target Fix4.16
CreatedJun 14, 2016
ResolvedApr 3, 2017
UpdatedApr 27, 2018