ASP.NET Core Web App and windows form app give different results on service references

Question

I try to add service references on ASP.NET Core Web App. That results app reference.cs file is mostly missing, classes are empty etc and only 100 lines.

But -even in same solution- if i try to add the same service reference in windows form app, all methods, interfaces and classes are completely correct.

If i try to add web references in ASP.NET, theres no missing but i need to use WCF.

I try to copy other references file and paste it but it wont work.

What did i miss?

Note: I already check this answer and subject but it will not work first time and question isnt same. My reference.cs file isnt empty,and also theres no change even i try 100 time it will be the same output - this question pointed coincidence - so it is NOT duplicate question. Thanks.