I’m having buried cards appear again, too (up to 20081.4 as of this morning), sometimes as soon as I go out of the deck and come back into it again (without syncing). In addition, I am getting intervals of 138 years on the review buttons of a few cards – I think many of the same ones, which is why I’m posting here. When I look at the history on the desktop version after clicking through one of these, the interval property is 138 years, but the new interval for that review in the revlog appears as 1 second, and the due date is as would be expected for a 1-second interval.
My maximum interval is 100 years, so a value of 138 years shouldn’t even be possible.
I double-checked my scheduling settings and the graduating interval, easy interval, minimum lapse interval, and review factors all look normal.
Notice that yesterday this card got an interval of 36 years (also obviously wrong given that the previous interval was 1 day), then dropped to 1 second when I pressed “good”. I didn’t notice the 36-year interval when it happened, and I certainly didn’t do anything to make it come up for review after 1 day.
