Bug: Cannot write accent marks Ḥ Ḷḷ and ñ when Asturian translation is set

I cannot write the Asturian letters (Ḥ Ḷḷ and Ñ) and accent marks (á, é, í, ó, ú) when I use the Asturian translation, I tried with the Spanish translation and it works properly (using the Asturian variant for the keyboard, of course).

Using Abrowser I can write the letters (Ḥ Ḷḷ and Ñ) but not the accents.

I'm new at Trisquel, previously I used Ubuntu and Debian and I don't have problem with that.

I'm using Belenos in a Point of view netbook (Intel Atom)

Could be an encode problem? Asturian needs UTF-8

Thank you