[NEEDS INPUT] Curtain On Doors Darken Or Lighten when Exiting and Reentering Lot

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Often (50% - 99%)
What is your current game version number? 1.47.51.1020
What expansions, game packs, and stuff packs do you have installed? All
Steps: How can we find the bug ourselves? Put curtains on a door
What happens when the bug occurs? When you put a curtain on a door, the lighting on the curtain will change.
What do you expect to see? For the lighting to no change when putting curtains on doors
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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The curtains will snap to the window, but the lighting will change on it.