I noticed that when I click the Animation Toggle on the tool bar, the 3D Gizmo does not scale down as you get closer to it...I was trying to work with some particles and the Gizmo is so large that I can barely see the particle up close...I am having to get my camera inside the Gizmo to view the particle...
I just thought I would mention this since the Gizmo does work correctly in the normal scene view...Sorry, if this has already been mentioned...I could not find any mention of it in the forum search...