When starting my project in the debugger (C# .NET Core), it states it's debugging "just my code".
I want to also debug the libraries, and can't see a setting to disable this anywhere in VSCode.
Is it possible to disable?
For this you need to change the launch.json file. Inside the launch.json file you have to set "justMyCode" to false.
As described here. (I was pointed to that link through this post on the Visual Studio Code site.)