Gallery says my build belongs to someone else?

Update, I have continued to look at their profile and see if any of their builds are familiar or similar to my build.

I have been mistaken, as I do recognise one of their builds as a download I had looked at for a different sim, on a different plot of land. I hadn't realised that was their's and i download builds so infrequently that I had forgotten that I had at all. As it turns out I didn't keep it long because the oven caught fire because it was overlapped with benches and my sim got trapped three times in dead space and i gave up on the lot after about 5 minutes of game play.

So here's my next question - There's one of two options here.

I recall having that build on a different plot of land. So why is there a connection / glitch?

If I am again mistaken, and it was on this plot of land, it would have been BEFORE another house that I know, 100% that I had built on this lot before. So at worst case scenario, the lot would have been wiped clean twice before I built this one.

So now what??

Sounds like this known bug:
http://answers.ea.com/t5/The-Sims-4-Bug-Reports/Wrong-Creators-name-in-the-gallery/td-p/4524122

This happening to me as well but slightly different.

I downloaded a few more houses and venues from the gallery and when I go to the 40x20 lot sized houses specifically, the houses and venues say they were made by me (which they weren't) and instead of a picture of the houses and venues I've downloaded, there is just a blank blue box and what's worse- I CAN'T EVEN PLACE THEM IN MY NEIGHBORHOOD.

I've tried uninstalling and re-installing the game, repairing the game, disabling Origin while playing the game and deleting any mods from the Sims document files..... Nothing is working.

Any help would be great ☹️

@CloutStorm I have the same issue with a build in my library.  In my case, it's a single build and it shows up as a different home icon, depending upon how I have my library filtered.  However, one constant is it's always the last build shown (could this be the same in your case as well?).  When I click on the icon, it pulls up the blue box you mentioned, also with some garbled and flickering icons at the top.  I believe that this is caused by a corrupt item in my library.  Like you, I have uninstalled/reinstalled, repaired, and cleared my cache, to no avail.  I'm sure that deleting the contents of the Tray folder would fix it, but then I would lose all the items in my library, which is not acceptable to me.  Thus far, the corrupt item hasn't actually caused me any difficulty other than the annoyance of its presence.  It hasn't spread to other items or caused me problems with downloading/sharing, so I have just tolerated the problem and let it go.  I'm sorry I don't have a solution for you.

Yes, that's my problem as well (including the weird flickering icons). At the very bottom of my library some of the houses I've downloaded from the gallery have duplicated at the bottom of my library as well. I also can't delete the glitched houses/venues when I click on them and see the blue screen. I have this problem no matter how I filter the lots. I think I may have to delete my entire cache.