Another example: http://youtu.be/1pKmov3W88Y?t=1m19s (1:19)
In this video, you can see the player going into the barracks building where there should clearly be shadow falling onto the Gorka helmet. However, the sun directly reflects from the Gorka helmet and it also is far lighter (because of no shadows displaying on it) than the rest of the player's gear.
For my graphic settings (may help with the repoduction of the issue): objects on normal, shadows on normal, HDR on low