Client in portuguese (ptBR) when you DELIVER quests

Dear friends, I want to talk about an issue that could be a problem of the client and not Warmane specifically.
When I put WOW in my language, brazilian portuguese, (almost) everything is perfectly translated.
All the texts, all the voices, maps, characters, creatures, pets and etc.
There is only one (big) problem in the quests, which is, arguably, the most important part of a translation.
When you GET a quest, it's perfectly translated...
But, when you DELIVER the quest, the text is always in english.
I have noticed this exact same behavior in other servers.
I was wondering if there was a fix for that.
It's not that big of an issue, but it's something that makes it difficult for me to convince other brazilian players to come play on Warmane.
Thanks for the help.