Image filename property field is confusing

Filename is rendered by org.hippoecm.frontend.plugins.gallery.editor.FileNameDisplayPlugin and is not editable, however, it is rendered as a normal input field.
You can make it editable by using org.hippoecm.frontend.editor.plugins.field.PropertyFieldPlugin
If we want to keep that as a read only field we should change its rendering as a label/text or at least change its background color.