I thought this was fixed in 1.3 and I haven't had the problem at all until now. Has the bug resurfaced after 1.6? I'm just starting to see minor bugs here and there that I had never seen before.

Anyone else?

I don't know if this is because of the patch 1.6, but I couldn't mount the Ghostblade ( clear blue Ancient Nord Sword ) on racks or display panels on a wall.
I could mount other stuff though. But I haven't tried everything, so I don't know for certain.

They all work in my homes except for two dagger display cases in Hjerim, some weapons do not work right with some things especially the racks, but that has always been there. Same as not all helmets work with the mannequins. And there are still the usual mannequin glitches, I caught one of the Honeyside ones up to mischief the other day.

What system are you referring too, Xbox, Ps3, PC :/

I'm using Xbox 360.

I've had the problem on PS3 with patch 1.5. It's rare, but it happened.