When opening the Logos 6 library panel on a Macbook Pro Retina model, using an external display, if Logos is moved to the external display, the checkbox controls are incorrectly scaled and the UI looks wrong in general.
In addition, some controls are misaligned to the mouse pointer. The horizontal scrolling control does not work unless you click significantly below it. The resource lines cannot be selected unless you click just over half-way up the line, or above the line. In other words, you will usually choose the wrong resource if you aren't paying attention. This happens on either display.
15" Macbook Pro Retina, OSX 10.10, set at 1920x1200 HiDPI. External display: 2560x1440.