[BH] Tiny pink outline lines appearing while building

No, not a million lol, it only showed up when I was using the platform tool, and it was only outlining the sides of said platform, I’m not sure if the pink lines showed up immediately when I placed the platform and I just didn’t notice? I can do some more testing tomorrow night on the same lot and others to see if I can get to appear again? 

I will mention I do use mods, like MCCC, UI cheats, more CAS columns, relationship overhaul I think? and a realistic birth mod, I don’t have build buy items. 

Sadly OP never came back. Curious if this is really the same issue or something else.

Leaving this to EA to look into further.

I just loaded my game to the find the same issue! This is the first time I've seen it, so I was trying to find a solution online. I also do not have the business and hobbies pack...

So, I am getting these random and annoying pink lines on my build mode buildings. I searched it and learned there's a toggle for this, but I don't have the toggle people are talking about and I don't have any of the newer expansion packs (Last I bought was cottage living). Is this a glitch or is there something I'm missing?

This thread may refer to your issue 
[BH] Tiny pink outline lines appearing while building | EA Forums - 12084435

Hey! I was minding my business in build/buy mode when I noticed this weird pink outline around my front patio. Tried making it not a room by deleting a wall, replaced the fences, checked if the wallpaper was cc (it sometimes makes weird effects if not set up right), which it was not. I wondered if it was a for rent glitch, since I have that pack, even though the lot type was a regular residential. I went to switch it to residential rental, and I got a pop-up telling me that (paraphrased) "business areas are not available in some lot types."

I don't own Businesses and Hobbies. I didn't assign a room in residential mode, and I don't know why I'm getting popups and uncontrollable features from a pack I don't even have. 

For reference, this could be a cc thing? The only things I can think of that might cause this is Tmex's Better build/buy and TOOL mod, which I have downloaded as my only build/buy mods. Has anyone else had this problem, and do you have those mods installed if so, or not? I'll try to include some screenshots from my game. I would replicate it without mods but I can't seem to get the lines back to test it. 

it’s been happening to me too, with no mods or cc and on pc. it basically looks like if you have the businesses and hobbies pack but you can’t turn it off

leucosiax​  Hello!  This happened for me but only when I tried to move the lot so I'm not sure if it's the same as what you've reported.  At any rate, I wanted to share the video I got in case it helps the devs to figure out what's happening here. 
Edit: This video was captured from my PC but I wanted to note that the same thing is happening on my PS5.
https://youtu.be/q4DITKuQTt0

I'm currently building a restaurant, and the pink Businesses and Hobbies lines showed up while building it. Because it's not a residential lot, there's no option to turn off the lines in the build mode UI. As far as mods, I have default skin and eye replacements, as well as the OMSP shelf, but no script mods.

Changing back to residential immediately removed the lines visually, and when I changed back to a restaurant they stayed gone, even when I added a new room. So luckily there appears to be at least a temporary fix.

I went to move the lot and the pink lines immediately reappeared, so my current guess is that might be a trigger.