Thicker Controls in Pose mode

Hey Gang, semi-new Blender user after years of workig in Maya. Loving it so far.

I have had something happen to me and it’s been boggling my mind. While rigging a character, mid way though all the custom control shapes because thick in 3d viewport. They return to normal/defaul thickness when I jump out of pose mode. I did find a setting in “Themes” that is used to modify line thickness in viewport but it’s set at it’s lowest “1” setting so that can’t be it. It’s something specific to pose mode as it only occurs there.

Example ( http://prntscr.com/cm6rn2 ) The red arrows point to the weirdness the blue one to the thickness that was there prior to this happening.

Thanks for your assistance.