When I update a non jsf (normal html) component, the element disappears from the render and loses its content

I'm using a <span> element that is using a javascript library on it.

  

Remembering that JSF functionality only works on its elements

When I run an "update = component_id" (this component_id is a non-jsf component) it loses its contents and disappears from the preview.

Example. A <span> with "contentEditable = true" in its initial state:

Whatisdonetheupdateitisinthefollowingstate:

Only the square clean with nothing ..

Does anyone know why this behavior ...?