Pink lights in Phi?

[humanoid]

So I'm not sure if this is a general problem with the engine or just level specific but I don't recall noticing it at an earlier point in the game, only in Phi (perhaps because the lights weren't placed like that anywhere else?).

As you can see in the attached pictures, looking at the lights that are placed behind grids in an angular way, they will appear pink through the grid rather than white.
However they are rendered correctly when looking at them from a more perpendicular point of view.

System info:
OS: Win 7 x64
CPU: Intel i5-3570k
GPU: Nvidia GeForce GTX 670 (latest driver installed)
RAM: 8GB