Code completion suggests the same property multiple times

Describe the bug

When a property is filled dynamically (using if/then/else) based on the value of another property, code completion shows multiple options of the same property (the original blank one and the dynamically chosen filled one)

This behavior does not happen when using the same schema within a json file

Expected Behavior

Only one code completion item should be shown: the updated property based on either the then or else clause

Current Behavior

Multiple code completion items are shown:

1. the original empty property
2. the updated property based on the active then or else clause

Steps to Reproduce

1. download the attatched schema, json, and yaml files: redhat-yaml-issue.zip
2. edit settings.json file to include the following lines:

"json.schemas": [
    {
      "fileMatch": [
        "/json.json"
      ],
      "url": "file:///path/to/files/schema.json"
    },
"yaml.schemas": {
    "file:///path/to/files/schema.json": [
      "yaml.yaml"
    ]
  },

4. put curser on the line underneath the "enableGrandchild" object
5. bring up code completion (ctrl+space on mac)

Environment

• Windows
• Mac
• Linux
• other (please specify)

Start by downloading the attached redhat-yaml-issue.zip and following the settings.json, schema.json, json.json, and yaml.yaml reproduction steps. Compare completion results for JSON and YAML with the active if/then/else branch. Done means completion offers only the updated property once in the affected YAML case.