On Yosemite I can put the right margin inside the image (3 pixels) to make it part of the clickable area.
That would probably make the difference between hit and miss. I always seem to click one pixel above or below the chevron somehow.
Oh… I was actually talking about padding to the right of the chevron.
Adding padding above/below should be doable.
Thanks, so much better now with the new beta!
Best regards, Bas