[TROUBLESHOOT] Lighting not working properly

@Ninnifer18 

Maybe try a factory reset of your game folder

Step 1. Rename The Sims4 folder to "The Sims4 old"
Step 2. Fix the game in Origin
Origin/Library - right click on TS4 - option "Repair game"
You have to wait until Origin will fix all packs, not only the base game.
Step 3. Turn on the game - a new game folder will be created and you will have two - one old, one new
Step 4. Check if you still have this problem in the newly created game folder
If the problem disappeared
Step 5. Delete in the new game folder following folders:
"saves" and Tray.
Step 6. Go to "The Sims 4 old" folder and copy - your "saves " folder.
Step. 7, Paste this folder in a newly created game folder.
Step 8. Do the same with Tray folder and TrayDeleteItems file
Step 9. Copy and paste your mods and CC from old mods folder to the new one. First copy the scripts mods every time checking if the game is working properly. If you have a lot of CC try 50/50 method
Step. 10. If all is OK - delete The Sims4 old folder. Now you will have only one game folder working properly.

By the way, reinstalling the game will not spoil anything. Just move the desktop game folder first to be on the safe side.
However, repairing the game on Origin is almost as effective as reinstalling but I think that the problem is related to your graphics card and graphics settings in the game. Did you try to set them differently?

Do you use any mods to change the light in the game?

And one more idea - give me a link to some of your house where you used the glass roof already with this error. I will check in my game if it looks the same and has this error.

I don't work for EA