Double points?

[scarcerer]

I just finished a timed practice session (in French for Spanish) and got 16 correct. However, I noticed that my daily progress chart showed 32 points more than it was before the session. Duolingo froze for a moment at the end, so I'm wondering if that could've caused the extra points.

[savage_queen01]

I guess it was the frozen Duo that caused it because you normally don't get double points.