I noticed this when I was exploring the dwemer ruin near Tel Uvirith.
So I went into the construction set to check it out. Because at first I thought it was just made smaller by a plug-in by changing the scale.
But the bug also appears in the vanilla version and the scales are set at 1.
So my guess is... well.. I've no ideas... that's why I ask you guys .
So... anyone any idea?