Unable to edit 'Custom data' field for Send Web Request in Automation for Jira

Issue Summary

Unable to edit 'Custom data' field for Send Web Request in Automation for Jira.

Steps to Reproduce

1. Create a new Rule or Open an existing Automation Rule.
2. Add the Action Send web request.
3. Select the Webhook body as Custom Data. 
4. The custom data field is disabled and cannot be edited. 

Expected Results

The custom data field should be enabled and editable. 

Actual Results

The custom data field is disabled and cannot be edited. 

Workaround

You can use the browser inspector do make the field editable, as described below:

1. Right-click on the field and chose the option Inspect
2. In the element as described below, remove the disabled clause and hit the "Enter" key on your keyboard.

<textarea rows="10" class="textarea long-field long-field" name="customBody" id="customBody" disabled=""></textarea>