Every now and then I try to get rid of the difficult words, usually when I am near or above 20 difficult words in a given course. Up to today each difficult word was then shown once, whether I got it right or not did not matter (That’s on the website - the app behaves differently and I hardly ever use the feature there).
Today words kept coming back more than once (probably related to the counter ratio of right vs. wrong) until all difficult words were relearned up to three times. After that the counter went to zero. Anyone else experiencing this behaviour?