Goto http://www.lanacion.com.ar/nota.asp?nota_id=1056975&pid=5182664&toi=6256 Click on Mostrar Respuestas/Ocultar Respuestas link (Show/Hide Responses), when shown, forums responses are not displayed correctly. Works fine with Safari 3.1.2 and Firefox 3.0.2.
I can't replicate the bug in the test case in Safari 17.4.1. There is only one snapshot from August 8, 2014 in the wayback archive at: https://web.archive.org/web/20140808014057/http://www.lanacion.com.ar/1056975-tras-el-anuncio-de-la-fed-la-bolsa-de-tokio-registro-una-fuerte-baja. There is an issue with overlapping text at the bottom of the webpage in the web archive which is possibly a separate bug, there is not an attachment to compare it to. The current url redirects to another page that does not have an issue with forums.
Created attachment 471169 [details] screenshot of the web archive, overlapping text
yes without a better way to reproduce it. We can't really do anything with it.