Using courses from another language than English screws up my homepage
I've noticed that, if I try to subscribe to a course which is in a medium language other than English, it screws up my homepage and hides all my from-English courses.
The only solution I can find for this is to sign up with a second Duolingo account. I've done this with Catalan and Guarani, both of which are only available as Spanish-medium courses. So there's a tip for you if you are dealing with this problem.
On the desktop page, it should not hide your other courses. The other courses should be shown as a separate category outside of courses for Spanish speakers. On the mobile version, it does hide them, but clicking on the plus button to add a course and readding one of your courses for English speakers will make your other courses show up again.