A friend and I crafted a fire and placed inside one of the "gun houses" (blue and yellow).

After a short time with both of us facing the fire the screen goes completely jet black and all you can see are the glowing embers of the fire. To fix it you need to face away from the fire and the screen slowly comes back into focus.

It was night time on the server and my gamma and brightness were both turned up full. However I changed these levels back to normal to test it and the same problem was happening.

It was happening for both of us. This was the first time I'd experienced it but my friend said he noticed this on 0.58 Experimental.