nikon - My lens's focus ring can be twisted past infinity and the close-focus stops without ever hitting a hard stop— is it defective?

I have a AF-S Nikkor 50mm 1:1.8 G lens which I use for my Nikon D3100 and D3300 cameras. Today, I noticed that the focus ring can be twisted past the infinity and 0.45m focus stops. It can be turned indefinitely without ever hitting a hard stop. The focus scale indicator stops moving and the focus elements in the lens appear to stop moving, but the focus ring can still be turned without ever stopping. Is this typical, or is my lens defective? I've only had it for about a month.