AutocompleteInput is not working as expected

[kakoli-biswas]

What you were expecting:
Ability to search new text freely using AutoComplete component.

What happened instead:
Automatically field the last value, and could not search for new value. And also the label is not showing properly as shown in the gif.

Related code:

<ReferenceInput label="Select Class *" source="class_id" reference="standards" allowEmpty  validate={[ required ]}>
    <AutocompleteInput optionText="name_section" />
</ReferenceInput>

<ReferenceInput label="Select Student *" source="student_id" reference="students" allowEmpty  validate={[ required ]}>
     <AutocompleteInput optionText={function(obj) {
                    return (
                        obj.name + " (Roll: " + obj.roll_no + ")"
                    )
                }} />
</ReferenceInput>

Environment

• Admin-on-rest version: 1.4.0
• React version: 15.6.2
• Browser: Chrome