The same titles keep reappearing in the watch history

Hi,

when I scroll down my watch history the same movies start to pop up again, especially after more are being loaded. There should be 1883 unique entries, and it is so when I verify all the watched titles via Advanced Search, but in the watch history the list seems to start all over again every 200-300 entries.

Is there some bug or can I solve it somehow on my own?