im using Anki 2.1.35 for 32 bit windows. its only happening on one deck. all my other decks are fine. i tried removing all add-ons, reinstalling the app, checking database, nothing worked. this is the deck in question
i suspended a bunch of cards recently but the suspended cards are still showing up and every time they show up i check my stats and i see that new cards have been added and the total number of cards have increased. when i go to browse i find that some of the suspended cards have been unsuspended. i checked for duplicates but there werent any.
Your notetype has forward and reverse cards, and one of them was missing. Anki noticed, and generated the missing cards. If you don’t want them, you’ll need to remove the extra card template.