Automatically select current Layer/AOV when pushing a render
When pushing a render ("Push A" button), the render is copied in B windows (on the right).
The problem is that the selected "Layer/AOV" of B (bottom right of the render view) is not the same than when you pushed A (bottom left of the render view).
This mean, when you are in a particular "Layer/AOV" ("hair/Diffuse" for example) and press "Push A", B will, by default, be another "layer/aov" (the first of avaibles). Doing so, you will often have a gray image if you didn't rendered the first "Layer/AOV". This is quite disturbing as you have to recheck the "Layer/AOV" you are in (click on the bottom left) and select it in the B windows to compare (click on the bottom right).
I suggest, when you press "Push A" button, that the B windows try to select the same "layer/aov" than A is currently looking.
This behavior look more natural IMHO.
Keep the good work!