If I remember correctly with 9.2.1 SW or earlier, single monitor users would see the b2s backglass in front of the playfield, so if you made the B2S small, you could play the table and actually see the B2S on a single monitor.
With 9.90 or later, when we moved to directx9 and windowed fullscreen mode, the behavior changed. The B2S backglass is now always hidden by the playfield. When the playfield is active, you can no longer see the B2S in front of the playfield.
Edit: StevOz for the win
Edited by gtxjoe, 26 August 2015 - 12:55 PM.