When using Stereo 3D, the tree views, properties window, settings, and other "desktop" frames used to appear slightly above the screen when wearing 3D glasses.
This user interface now rests on the screen plane and does not appear differently depending on whether it is rendering in a stereo 3D mode. This improves usability of the software when using one of the stereo 3D modes as the controls can appear more clearly and it does not require the use of 3D glasses to operate the user interface.
The rest of the scene in the main view remains fully depth-correct when using a stereo 3D rendering mode.