Work through these checks in order
- Open the correct form in the editor.
- Select the field that should appear and confirm conditional logic is enabled.
- Check the controlling field, operator and expected answer spelling.
- Check whether the rule uses All or Any and whether that matches the intended behaviour.
- Save the form and test in a fresh front-end session.
- Check whether another conditional section or page rule affects the target field.
- Confirm that a required field hidden by logic is not blocking submission unexpectedly.
- If the issue persists, test on staging with only the relevant components active and review console/server errors.
Regression test
After fixing the rule, test every answer combination that should show or hide the field. Include both a valid submission and a submission that should fail required-field validation.
Official reference: Enabling Conditional Logic for Fields.