Deleted words showing up in app

Whenever getting to the part where it shows a word and you have to select the correct answer, possible answers show up that I deleted from the course and are not in the course or the database, and keep showing up, even after logging out and back in several times over a period of several days. This is a problem, as the technical answers can get very confusing on their own, without having false near duplicates (the words I removed and deleted). plz fix!

This also happens on the web:

I assume this means it’s in the core memrise logic, and affects iOS as well.

I find the same happens with entries which have been edited, ie to add to the definition or remove a typo. The only thing which seems to help to force the Android app to pick these up is to uninstall it completely, and then re-install it. A bit of a pain, so I try to avoid making too many changes to my courses (except adding new entries, which seems to work fine)