SeeEmilyPlay

I know this is an old thread but I just want to add what worked for me to fix this, as I was brought here by a search on the bug and had the same problem as OP. Thanks so much to eddy4life for the suggestions. I waited 7 hours outside the door to go inside and everything worked as per normal.

I know this is an old thread, but I was looking for a solution and this came up. This helped pinpoint the problem for me. I had a mod that was altering interior lighting. When I turned the option off for that mod, the location I had the problem with, was fixed. (Weird though, I only had it occurring in one location that I found - the White Phial in Windhelm. The 'offending' mod was Window Shadows with the Enhancer turned on. Turned the Enhancer off and it came good).

I know this is an old post but I came across it whilst looking for a solution to the same problem OP had. I found the above quoted information useful, specifically changing: [sKYLIGHTING] AmbientMinLevel helped fix the issue for me. Thought it might help others who come across this thread for the same problem. Thanks @prod80