Renderer Bug - Partially occluded moving objects cast motion blur vector on top of occluding surface.

[MillbrookWest]

Difficult to show in still images, tried video but YouTube bit rate makes it difficult to see [EDIT: Added to bottom of post]. But as in title; if you have an object in motion, which is partially occluded by another stationary object, the motion vector gets cast on top of the occluding surface. 

Probs need to zoom in to read text, but flick back and forth and you can see the corpus crewman peak. If he walks behind that door, the blur in constant (as if you could see him clearly) until the model is fully occluded, or the model stops.

Does not seem to be an issue when the entire object is occluded (If he were to walk behind the box in its entirety for example). 

Seems to be most apparent when you are at a distance ~40m+.

Seen this happen through the ground in the plains, as well as the ground in the Valis (as enemies have run beneath the crest of a hill, or behind respective Flora).

Maybe one for @[DE]Steve as the issue could be TAA (i have motion blur disabled, but as i understand, the samples are still used for TAA).

EDIT:

Figured if i slowed it down and zoomed in a bit i'd give youtube the best chance possible to keep the detail needed:

 

Edited April 8, 2019 by MillbrookWest