OnParticleCollide doesn't return Velocity on every bounce

OnParticleCollide doesn't return Velocity on every bounce. In code it lists all the return pins trigger 'on kill'; however, all other pins return correctly on each bounce but the velocity does not.

I don't believe this is a regression. The licensee reported this was happening in 4.14 but provided their test project in 4.16.

Licensee Description

The issue I am having is that the only collision that produces any velocity value is the collision that is also killed.

For example, if I set a particle to collide three times, the first two collision events show a velocity of 0 and the third will show some correct velocity values. Here's some example debug output:

Particle collision has velocity of X=0.000 Y=0.000 Z=0.000

Particle collision has velocity of X=0.000 Y=0.000 Z=0.000

Particle collision has velocity of X=9.777 Y=50.625 Z=-296.394

Does anybody have any ideas why only one of the collision events produceds a velocity greater than 0?

(Ultimately I am trying to modulate the volume of the particle's sound effect by its velocity).

1. Open the attached project
2. PIE
3. Watch the print to screen as the particle bounces

Results: The first two bounces, OnParticleCollide returns all zeros. Only on the third bounce that kills the particle will the velocity actually return correctly.

Expected: For the velocity to return correctly with each bounce of a particle.

Fix UE-51650

I am not able to find world outliner how to enable it?

Delay nodes occasionally don't fire the "Completed" output in a nativized build

Undefined sysmbol: typeinfo for AActor when cross-compile linux dedicated server on windows

How can i modify the param name in EQS node

How to achieve HLSL Multiple Render Target in Material blueprints?

What method is used to fill polygonal regions when drawing spline mesh at run time?

When I open UE4 4.24.3 it appears that. Does anyone know how to solve?

How does TextureRenderTarget2D get TArray<uint8> type data?

Bonjour j'ai un petit problème c'est que je ne vois plus l'onglet "scability" pour changer les graphismes de uefn et j'ai pas trouvé l'option pour le faire revenir ?