Suggestions do not work

Describe the bug

Hi! I have installed a an extension for vscode v1.15.0.

Wrote this json file for validation and suggestions:

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "Example",
    "description": "An example of how to use snippets for json schema",
    "type": "object",
    "properties": {
        "object-mapper": {
            "type": "object",
            "properties": {
                "test1": {"type": "string"},
                "test2": {"type": "string"}
            }
        }
     }
}

This is my file:

# yaml-language-server: $schema=/Users/avkazantseva9/test_plugin/suggest.json

object-mapper:
  

Expected Behavior

When i type object-mapper i get suggestions about tests1 and test2.
On this photo there are no suggestions:

Current Behavior

I get any suggestions, only if i type "te", then i will get suggestions about them.

Steps to Reproduce

1. Simply download the extension
2. Create folder
3. Create both this files

Environment

• Windows
• [ +] Mac
• Linux
• other (please specify)

Reproduce the issue in the VS Code YAML extension using the provided JSON schema and YAML file, then inspect the suggestion behavior after typing object-mapper. Verify whether suggestions appear immediately as expected and use the existing extension tests or language-server entry points to locate the relevant completion handling; done means test1 and test2 are suggested without typing an additional prefix.