When replying inside the embed iframe, the iframe itself doesn't scroll (iframe-resizer expands it to fit its content), so ask the parent frame to scroll to the reply position instead. No-op outside an iframe or when the composer isn't full screen.
When replying inside the embed iframe, the iframe itself doesn't scroll (iframe-resizer expands it to fit its content), so ask the parent frame to scroll to the reply position instead. No-op outside an iframe or when the composer isn't full screen.