Hi,
Until now, when I started a fire, looking at the fire source would make environment slightly darker, which was a bit exaggerated but not a problem. I should also state that this was prior to 0.52. I should also say that I never played in 0.52 update so I don't know if this is valid in 0.52 as well.
Anyway, in 0.53 stable version, when I start a fire, screen goes completely black when I look at the light source. Apart from the fireplace, I can't see anything. I know this is not a bug, this is a feature, but it's really out of control at the moment. I will also be uploading a video and link it in additional information box, hoping it will help you identify the problem.