DisplayField doesn't show placeholder or template for empty value using Material Theme

[marciogurka]

Forum post

"Core.widget.DisplayField

new DisplayField({
    appendTo : targetElement,
    width    : 200,
    label    : 'Or use a template string',
    value    : '',
    template : age => age ? `${age} years old` : 'N/A'
});

It adds 'b-empty' cls to the field and the label is not aligned properly (I can fix with a CSS override)

new DisplayField({
    appendTo : targetElement,
    width    : 200,
    label    : 'Or use a template string',
    value    : '',
    placeholder : 'N/A'
});

Placeholder is ignored completely though it is mentioned in the docs.

The problem happens for Material Theme."

[matsbryntse]

https://forum.bryntum.com/viewtopic.php?f=43&t=28594&p=143754#p143754