Currently the ‘Review Intervals’ graph on the statistics screen includes suspended cards, which for me results in the first bar showing a deceptively large number of cards, most of which were suspended (either automatically or manually) with a low interval. Arguably I shouldn’t have so many suspended cards lying around, but I don’t think this is how the graph is intended to work so I’d suggest this be fixed to exclude suspended cards. If this is the intended behaviour, I’d suggest that suspended cards be indicated with a different colour.
You can exclude suspended cards by adding
-is:suspended in the query.