French from German -- in Italian?
This can happen when Duolingo starts synchronizing your courses with its servers, if ......
- you are logged in two different devices in different courses
- you're logged in with two different tabs
- you are logged in on your phone, both in the App and in the web version of Duolingo
It happens more (especially when the Duolingo servers are slow):
I know this is not related, but props to your computer RAM, my computer would burst in pieces with almost 30 tabs open :-)