Sometimes CharacterMovement stops at very low steps (quite lower than Max Step Height).

Sometimes CharacterMovement stops at very low steps (quite lower than Max Step Height).

Capsule radius of Character is 50cm, Max Step Height is 45cm, step heights is around 10~30cm, MaxWalkSpeed is 800cm/sec.

Reproduce ratio is 1/20.

Velocity of CharacterMovement would be (0.0, 0.0, 0.0) when stacking on the step. And StepUp() seems failed at if(InitialImpactZ <= OldLocation.Z - PawnHalfHeight), after MoveAlongFloor.

1. Download and extract stepuptest.zip
2. Open StepUpTest.uproject on the 4.12.
3. Play it.
4. Sometimes, you can find sphere stops on the step. (repro ratio is around 1/20, please try it around 20 times).

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