Hello
“WindDirectionalSource” rotation broken, the fix was to save, quit, open fixed. 
I hope that fixes it for you, it’s a simple one but it might save you before diving under the hood trying to work out what is wrong.
I had a problem where the rotation axes was not effecting the wind direction in the level. I was trying to affect some flags. I noticed the Wind Direction Source Component in the Details panel did have an effect on the flags when I cranked it up to 5000 so that showed me there was some kind of connection. I decided to delete the “WindDirectionalSource” and set it up again but I still had the same issue. So I saved and closed and opened the level and it worked.
