Hi,
It's the first time that happened to me, I tried all my knowledge to fix that, so I don't know if it's a bug or not...
I have a file where I created some Massing design. When I link it into a master file, every time that I turned on the Sun settings are bugged (it works only in Lighting mode, when I move to Single Day and Still Dy doesn't change at all, and the shadows are totally wrong)… I'll send a couple of screenshots from the Link and Master file, to show you what I mean …

In the linked file (all Sun modes are working)
Just before you ask:
- The two files are consistent (with Levels, coordinates, Location, etc.)
- I tried to create a view in the linked file and then get the linked views in the master file, didn't work.
- Tried to reload / unload all the links.
- Tried to retransfer sun settings / project settings from the linked file into the master file
- detach and recentralise the Master file
Hope some of you guys had the same problem!
Thanks!
Carmine