Nikon D3300 Autofocus Light problem?

When in single point AF mode, besides the selected AF point, some of the surrounding AF points also gets very slightly illuminated (as if there's some leakage from the main AF point). The brightness is much less than the main AF point. I tried various modes and subjects, turning off and on the camera but the problem persists.

Is this normal? Shall I be concerned and take it to service center?

If that is not causing inaccurate focus, do not worry about it

If you are really concerned, contact Nikon's helpline and ask them about the situation you are experiencing

That's perfectly normal.