Vscode: [json] External schemas referenced from schema not updated

Issue Type

Bug

Description

Setup

color-schema.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",

  "validColors": {
    "enum": ["Red"]
  }
}

schema.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",

  "type": "object",
  "properties": {
    "color": { "$ref": "color-schema.json#/validColors" }
  },
  "required": ["color"]
}

test.json

{
  "$schema": "./schema.json",
  "color": "Red"
}

Test 1: Intellisense notices changes in schema.json

Rename the property color to colorx in schema.json -> (Desired) error in test.json: Missing property "colorx".

:heavy_check_mark: That work's!

Test 2: Intellisense does not notice changes in color-schema.json

Change Red to Yellow in color-schema.json -> no errors!

Restarting VSCode finally gives the desired error in test.json: Value is not accepted. Valid values: "Yellow".

:x: That doesn't work! (i. e. at least without restarting VSCode after each schema dependency change)

VS Code Info

VS Code version: Code 1.20.1 (f88bbf9137d24d36d968ea6b2911786bfe103002, 2018-02-13T15:31:21.019Z)
OS version: Linux x64 4.13.0-36-generic