The perspective of a circle should be ovoid rather than a perfect circle.
For example:
The perspective is a lot less noticeable in non round stuff, but clearly the concept of the original artist was a slightly off center perspective, which is very much evident in any round object that the game shipped with.
Perspective on edged things is harder to tell because of the diagonal orientation of the presentation, but if you look at walls and stuff it has the look of being just slightly shortened.
Either way, even if there is no off kilter perspective (and its all in my mind heh) as an artist for this game one would imagine that you would take what you make, then "photoshop" it into an in game setting to make sure that it looks correct. Clearly this is just not being done, or who ever it is that's making these items look this way simply thinks it looks better full on.
Personally I think the original art is the measuring stick. Its simple, beautifully done all around, and FEELS right in the world. That is the art style and perspective that should be emulated.
What really confuses me is the incident with the arcane circle art. The first arcane circle looked much like the ones we just recently got switched back to (on accident I think) which sports the terrible flat 100% perspective. Shortly after that art came out originally it was replaced with an infinitely better looking piece with an ovoid perspective that matches the original look of round objects, and could be put next to say, a pentagram, and look perfectly in place.
So SOMEONE must know that this perspective is off, and had it fixed. Yet ever since Samuri Empire we have been getting this off perspective on many (but not all!) objects.
Its a puzzle.
The new "desk lamp" from the clean up is also off. It looks out of place. And it's not that the art is bad (although it is clearly not being created at the same resolution sadly) its just off in presentation.