http://i.imgur.com/Rsu4SEz.jpg
edit: yes I mean the freestanding variant of course
I also found some other oddities
http://i.imgur.com/5ujVy1L.png
the stone corner is preventing the lower left and right wires from connecting
the upper right one is more of a "would be nice if that worked" (its a freestanding wire going through a hollow cover)
same as this http://i.imgur.com/DN2kEpS.png
and placing wires and gates on the inside of covers ^_^

The issue with freestanding wires has been fixed, but not the issue with the corners. I'll look into it now.
The wires going over eachother will hopefully be a thing at some point. We're planning on adding our own microblock that acts as a normal cover, but lets wires through (I guess that's what you wanted) ;)

yeah that sounds like it would make that possible awesome! =D

Made a temporary fix for this. It'll be properly fixed when the multipart system gets refactored :)