Glitch, feature request

When I have browser set to auto hide the key strokes stop working to switch between tools.

When adjusting exposure the histogram doesn't change until you release the mouse button.

I'm running a brand new Macbook Pro w/ C1 4 Pro.

Feature request or is it there already- When in multi view can we get an 'x' in the corner of the images for a quicker deselect instead of holding 'cmnd' and searching for the thumbnail and deselecting it? Please!