Fiddler does not work for .net core

I tried asking this on SO but got no answer.  Basically I have added some soap services into a .net core project using Connected WCF tool.  I find that fiddler does not see any calls made to these services.

I have a project that is using .net 4 framework talking to the same services and all calls can be seen in Fiddler which means Fiddler is setup and captures.

But I cannot find anything in .NET Core project that would affect Fiddler capturing the traffic from calls to 3rd party services.

Not sure what I am missing.