I have Material-UI TextField:
<TextField id="gen_ref_num" className="col-6 form-control-sm" label="Number" variant="filled" value={this.props.invoice.gen_ref_num} onChange={this.handleChange}/>
And this.props.invoice.gen_ref_num has the value already preloaded. Unfortunately, the label overlaps with the content. When I am start editing the field, then the label moves upside and sits in the right position (no overlap anymore). How to ask Material-UI TextField to respect the pre-loaded values and to move label upwards?