I don't use mods 1 bit. I'm actually not a fan of them one bit. I'm repaired my game and it still caused the issue. It is clearly a bug in my book. I'll repair my game a few times and see if that fixes it. If it doesn't fix it after probably the 5th repair then you need to fix this ASAP. Please try this yourself though in your game. I feel it is an actual bug since the tiny update before Eco release. I own all packs.
The game had an update and the bug is still there I dd as requested and uploaded a lot to show the problem of a main floor to basement bug report, To find me on the gallery look up Elithian87 and the name of the lot is Oakenstead. Its the 50 by 50 lot but it does it to every lot. It is just the stair issue ONLY the stair issue!
