`dependsOn` not working for `Code Editor` and `Rich Editor` field.

[robinbonnes]

Steps to reproduce:

1. Add dependsOn: [content, content_md, content_html] to name field in \october\test\models\post\fields.yaml
2. Fill in content in the Code Editor, Markdown Editor or Rich Editor.

Desired result:
You should see a spinner running next to the name field when you fill in content in one of the editors.

Actual result:
Only the spinner is shown after filling in content in the Markdown Editor.