how to remove joined address from loopback pseudo interface 1 windows 10

Question

I have a routing setting defined on my computer and its priority is set to 1.

Although the address I expect from the multicast group is in my routing mask, it joins the loopback interface.

When I try another ip address that may be in the same group, it comes through without any problem. I can't figure out how to remove 239.0.12.1 address from the loopback interface and joined to interface 15.

Thanks in advance for your help