aria-label is not defined for ‘Reply editor’ when the keyboard focus is on 'Reply’ edit box narrator is announcing as “Editing End of line”.
All components need an accessible name, ideally using semantic elements and attributes. In rare cases, aria-label or aria-labelled by may be needed to alter the name. Learn more by reading about the accessible name property.
When interactive elements have an incorrect name, it is difficult for people using assistive technology (like screen readers) to understand the purpose of control and its relationship to other content.