Javascript compiler error

Hi, 

I am working with Visual Studio 2015 update 3, and ASP.NET Core MVC v1.1.0

Whenever I have a compiler error blocking the build, I get a long list of Javascript errors in the Error List as well. It looks like one error per line of JS code.

As soon as I have found the actual C# error in that long list and have corrected it, all the javascript errors disappear.

Could this be a configuration issue, or is it a bug? 

Thanks Pieter