Word wrapping enabled through the menu is reset whenever settings.json is modified

[rotemdan]

• VSCode Version:
  1.8.1, latest insider build
• OS Version:
  Windows 10 x64

Steps to Reproduce:

1. Make sure that wrapping isn't permanently enabled, and if it is, remove any permanent setting related to wrapping.
2. Open a file that contains lines longer than the width of the screen.
3. Enable word wrapping through View -> Toggle Word Wrap.
4. Modify one character in settings.json and save it.
5. Word wrapping should be unexpectedly disabled.

This behavior makes extensions that modify configuration based on user actions, constantly reset the wrapping setting. For example this issue with vscode-spellchecker where the wrapping is reset every time the user selects to "always ignore" a word because that action causes settings.json to be modified with the newly ignored word.

[rotemdan]

Seems like the same behavior happens with the Toggle Render Whitespace and Toggle Control Characters menu options as well.

[alexdima]

Test plan item is #18316

[rotemdan]

The quick response was amazing! I'm already seeing this on the Insider build. Thanks!