The site was down for a little while several days back (one of the admins was doing some maintenance or something).
The overlap was the first thing I noticed different when the site came back up.
It is this way on 3 of my computers with 2 different zoom levels (I change the zoom level fairly frequently on one of the computers) and 2 different resolutions.
I seriously doubt it is something in Jay-Jay's settings if it is happening on three of mine also.
I would much rather go to my grave not needing my gun, than go there wishing I had it.