But it does. It offers "Rēdze tapa" as one of the alternative translations of "wrist" when translating from English to Latvian. There is no such concept as a "rēdze tapa" in Latvian. It might be a byproduct of translating English first to russian and then to Latvian.
It's not unplanned. The transformer architecture was literally created for better language translation.
It's fair to point that out, but the "plan" right now is to build AGI that is able to do a ton of things.
Current frontier models are not optimized to be best in class translators, they just happen to be really good at that as well.