Not really a bug, more of an oversight. It doesn't seem right that I can take part in the United Planets and get notices from other races that they've been paid to eliminate me, when I can't talk to anyone under any other circumstances because I haven't researched the translator yet.
I think it would be great to have the gibberish pre-translator communication screen pop up, and then just find myself under attack and have to quickly research the translator so I can ask what the bloody hell is going on.
Similarly, it seems odd that the Drengin and Korath can't talk to each other without the translator.