Something Strange while Practicing
So, I was just doing my Spanish practice, right? Strengthening those skills and such, when suddenly, a wild Russian question appears! I finish the practice session (which has completely converted to Russian) but remain very confused: why might that random switching-of-language have ocurred?
That sounds really strange. Do you even take Russian? Anyway, you can file a bug report here: https://support.duolingo.com/hc/en-us/requests/new. They will want screenshots if you have any.
Yeah, he takes russian, it's the one language that appears with the 7 besides it.
As for his problem, I have the impression that the bug will become a common thing for people who are learning more than one language, it's better to report it as soon as possible.
That happened to me once- I began a lesson in German, ended it in Welsh, and went back to my home page really confused. Make sure you submit a bug report like lilyflower231 said.