Intellisense not working

[CConchelos]

Intellisense is not working in Visual Studio Code
I can do var x = this.gameObject.Children() and I can see in the watch window that x has a collection of children, but putting this.gameObject.Children() directly in watch says: Evaluate request failed (Method Children' not found in type UnityEngine.GameObject'.).
In VS 2017, I could not be sure that it was working at all, I could not evaluate the variables either.
I think it was quasi working in VS 2017, I had a LINQ checking for Decendants().Where and that worked fine.
Unity 2019.2.9f1
VS Community 2017 15.9.17
Visual Studio Code 1.39.2

[CConchelos]

More info for VS Code. I can confirm that trying
var thing1 = this.gameObject.Descendants().Where(d => d.name == "name").FirstOrDefault();
returns null, where
var thing1 = this.gameObject.Descendants().ToList();
var thing2 = thing1.Where(d => d.name == "name").FirstOrDefault();
Does in fact work. However, a watch on thing1 will not evaluate, but a watch on thing2 will give me the gameobject info.