When using other port numbers than default, default ports are still locked/in use

In server.properties, I have set these (non-default) port numbers:
server-port=19142
server-portv6=19143

When running bedrock_server.exe, the server uses the new ports. However bedrock_server.exe also uses 19132/19133.

I can connect to the server using port 19142, and cannot connect to the server using port 19132, as I would expect.

But I cannot use port 19132 for any other software.

I'm trying to run two Bedrock servers on the same computer, but that is not possible at the moment because of the conflicting ports.

The attached screenshots show the single instance of Bedrock server blocks all these ports:

• 19132

• 19133

• 19142

• 19143