Pero no hice clic en Responder, hice clic en Editar

[JammyDodger]

En realidad, parece que es el plugin de Votación de Publicaciones.

Creo que ya existe un tema UX sobre esto:

Change 'Answer' button back to 'Save Edit' when editing a Post Voting post

When I edit the original topic the button that would normally say “Save Edit” now says “Answer”. It has the functionality of save edit, or seems to, so as it is currently I find it misleading/unhelpful/confusing.