Light shines trough the ceiling

Product: The Sims 4
Platform:PC
Which language are you playing the game in? Deutsch
How often does the bug occur? Every time (100%)
What is your current game version number? 1.102.190.1030
What expansions, game packs, and stuff packs do you have installed? - EP: 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 14 - GP: 01, 02, 03, 04, 05, 06, 07, 08, 10, 11, - SP: 01, 02, 03, 04, 05, 06, 08, 09, 10, 11, 12, 13, 14, 16, 17, -SP23, SP33, SP35
Steps: How can we find the bug ourselves? Add a window on the wall in the first floor and attach a white curtain. Put a table above on the second floor. Add a table light and change the color to pink so you can really see it while downstairs. The curtain downstairs will appear pinkish from the table light above.
What happens when the bug occurs? light from upstairs shine trough the ceilings ever since we been able to add wallpaper on the ceilings.
What do you expect to see? No light shining through the ceiligns. It's not a CC or Mod problem because I tested it with CC and without.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? Yes
Please describe the patch or change you made. Since we been able to add wallpaper on the ceilings. If I am not mistaking, it's since Horse Ranch.

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I don't know if anyone has already reported the light problem, but since we have been able to wallpaper the ceilings, I have noticed that light from the second floor shines through the ceiling.
This is particularly noticeable when the light is colored, as can be seen in my example pictures.

To best see it, add a window on the first floor wall and attache a white curtain. Put a table above on the second floor. Add a table light on it and change the color to pink so you can really see it while downstairs. The curtain downstairs will appear pinkish from the light above. It's not a CC or Mod problem because I tested it with CC and without.

Also the thought bubbles from any Sim walking around will be seen through the walls and any world area. It was not like that before Horse Ranch.

First floor:

second floor:

11 Replies

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CGrant56
Hero+
2 years ago
@LuvMySimz
I tried to replicate as best as I could what you are reporting. But I couldn't. So, a few questions.
Does the problem happen with just one or two curtains or all of them?
Does it happen with other objects?
Does it happen with other lights?
Does it happen with game curtains and lights or just the objects I see in your pics?
Do have a custom lighting file or are you using an overlay like ReShade?
I have all packs, but I don't have either set of curtains I see in your pics, so they must be CC. The same for the light on the vanity. There is a similar candle, but it doesn't shine with a pink or other colored light. I tested with all game items in a vanilla save with no mods or CC. So, it would seem this is a CC issue, and I would guess it's the light causing the issue. I tested a number of lights and none of them shone through to the floor below.
Hope this helps.
LuvMySimz
Seasoned Ace
2 years ago
@CGrant56 Thank you very much for testing my issue. Did you test on short walls?
Yes, the picture were taking with CC, but I had used non CC before and when I saw the issue I tested with the above curtain and candle cc and the problem was the same. I do not have any lighting files or overlay in my game. Just some cc and a few mods. The issue also happens whis cabinets on short walls. The top of the cabinet will look pinkish. Not on medium walls though. Actually everything that is close to a floor has this issue with short walls. I do not have all the packs. The candle in the picture is a cc clone from a christmas candle. Not sure why this would shine true the floors. I will start a new save file now and test without cc and will let you know.
LuvMySimz
Seasoned Ace
2 years ago
So here is a new test without cc. Issue is the same.
LuvMySimz
Seasoned Ace
2 years ago
I have to correct myself. It happens on all wall heights
medium wall
tall wall - not as bad as short and medium wall heights
LuvMySimz
Seasoned Ace
2 years ago
Sorry to post again, but as I went through the rest of the lights I found that the lava lamp is even worse even with the ceiling light on.
Most stuff downstairs picks up the color of the lava lamp upstairs.
Here the lamp is on a side table in the corner
and in this picture the whole side wall picks up the color from the lava lamp in the corner
CGrant56
Hero+
2 years ago
@LuvMySimz
Thanks for going back and doing such exhaustive testing! I'll go back and test again. The effect in your pics shows clearly. I tested on both medium and short walls and did use the lava lamp, among others when I was testing. And I used those curtains that you show in the latest pics as well among others. I had the lamps on a side table too. I also tested it at night in a new build that hadn't been furnished yet but the house was completely enclosed. I just didn't get what you are showing in your pics.
One more question though. Does this happen in both build mode and live mode for you or does it happen in one but not the other? I tested in build mode only so if it is happening for you only in live mode, that might be the difference. This time I will test in live mode too.
So, where does that leave us? Hardware is one candidate I can think of. I play on a desktop PC with a relatively high-end graphics card. I see you play on a PC but is it a desktop or laptop? If this issue is hardware related, tbh, there's not much you'll be able to do about it and will have to live with it.
Other than that, I can't think of anything else that might be causing the issue atm. So, let me do some more testing to see if I can replicate the issue and I'll get back to you.
Hope this helps.
LuvMySimz
Seasoned Ace
2 years ago
@CGrant56 - I'm on a windows 10 prof. desktop pc with ASUS GeForce® GTX 1050 Ti graphics which is good enough for TS4.
And as I have said, the issue is visible in several lots since we can paint the ceilings. I never had nor noticed this before.
And yes, the issue is visible in build and live mode.
I have a favor to ask. Could you pls go and test on the same lot in Windenburg? The lot is called "Havisham" Not sure if it's the same name for you since my game is in German.
Right now I'm on another lot also in Windenburg where the two girls "Freigeister" live. The lot is called "Landhaus am See" (in German) and it looks like on this lot the light issue does not show. This makes me think that the lighting problem only occurs on some plots, not all, for whatever reason. Will test in another world later.
LuvMySimz
Seasoned Ace
2 years ago
Ok, I tested on a lot called "Sims Square" in Windenburg and the same issue in there. But here comes my find!
The reason for the lighting issue is the STAIRS!
For some reason the stairs are the culprit for the light issue. I know we have stairs issues lately but that? Who would have guessed...
When I remove the stairs, the pinkish light issue is gone. - Check out my little video clip taken on the "Havisham" lot.
Light-Stairs Issue
CGrant56
Hero+
2 years ago
@LuvMySimz
Great! I'm glad you found it. I did do some more testing today and still couldn't replicate it so I didn't have any good news for you. It makes a little more sense knowing it is the stairs and the light is getting to the lower floor through the stair opening. The rooms I was testing in didn't have stairs in them so I never would have found it. Stairs have always done some weird things with lighting like if you ever look at the stair rails on the floor above the stair, the upper part of the railing is always darker but if you turn a light on below, they brighten up. So, it doesn't really surprise me that light does transfer the other way (up to down).
Regardless, I am glad you found it. I don't know if there is much to be done about it though other than enclose the stair with walls. But at least knowing why it happens is a good thing imo.
Enjoy your game!! Take care.
LuvMySimz
Seasoned Ace
2 years ago
@CGrant56 Thank you! And thank you for not ignoring my thread and taking the time to reply and test. Without your reply and participation, I might not have continued testing and would not have found the problem and just give up like most everybody else.
This shows once again that it's important not to simply ignore threads just because almost nobody has them and blame it all on mods and cc. After all, you don't pull problems like this out of your fingers as my pictures and video prove shows. Removing the stairs on lots with the lighting issue does solve the problem, but should not be the #1 solution for the player.

Thanks again for your participation ♥