[Affected versions]:

• Firefox Release 66.0 and above
• Chrome 73.0.3683.75

[Affected Platforms]:

• All Windows
• All Mac
• All Linux

[Prerequisites]:

• You are logged with your LDAP account on the "https://experimenter.stage.mozaws.net/" website.
• Have an experiment created on the Experimenter stage website.

[Steps to reproduce]:

1. Open the browser with the profile from prerequisites and navigate to "https://experimenter.stage.mozaws.net/".
2. Open the created experiment from prerequisites.
3. Click the "Edit" button from "Risks" section.
4. Insert an empty space in the input field.
5. Click the "Save Draft and Finish" button and observe the behavior.

[Expected result]:

• The "! This field is required." error message is displayed.

[Actual result]:

• The experiment is saved.

[Notes]:

• Attached is a screen recording of the issue: