Bluetooth can only be turned on from the terminal after using the 'service bluetooth start' command.
This problem has been there from the first.
My bluetooth chipset is : Bluetooth 4.2 combo..

Sorry, I am adding this note as the report accidentally been posted here while I was still writing .. ;(

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I cannot tell if this is 1 issue or since you were filing one bug you figured you'd mention the other...

regarding bluetooth:

The bluetooth is by design. If you would like to have it start automatically, then you need to enable the service, and not just start it.

systemctl enable --now bluetooth would enable the service, so that it starts at boot time, and the --now option tells it to start it as well.

I would highly recommend reading up on systemd services and working with them as this is the init system that Kali uses (except in WSL), so knowing how to work with them will be very beneficial.

Thank you sir .. I will do that ... But what about the wifi problem ?

I do not use realtek drivers, so i cannot say. You haven't shown any sort of output from the kernel, or what module it might be using, so it's hard to say what or where the issue is.

well sir I don't know how but the bug somehow got fixed .. please close the issue ...

User reported it's fixed