Q. The gear shifting problem is still there or removed - CB Shine?

I think it is removed now because I am using it from 2015 and have not observed it. but yes I will suggest one thing which has been told by service center but we usually ignore it that is "Do not overspeed bike till first 1000-2000 km". I will go further and will suggest to use bike single handedly within first 2-3 months at-least. WIthin this first usage also try to press gear shifter smoothly. This is advice for any bike.

Once manufactures difect may not be possible to resolve

The gear shifting problem is still exists