I just went through 5 or 6 tests of 3 words with 2 times repeat and none of them were repeating once completed, as expected. But in the loop every test what the same first words as if never learned.
I tried multiple test settings, 20 words, 2,6… and multiple repetitions 2 or 4. If selected 3 words, it showed the first three (let's say hello, goodbye, thank you). And after finishing the test with no error and starting a new test, the 2 proviously learned words were shown (let's say hello and goodbye). And the loop began.
But now seems normal in my 6 tests just now. I just want to explain in detail for future troubleshooting.