Why are my leeches not being tagged?

I noticed recently that I only have small number of leeches, which seemed too small to be right. My leech threshold is set to 4 and to tag as a leech. I looked closer and found that I have 186 cards that have 4 or more lapses (prop:lapses>=4 -tag:leech is the search command I used), but only 7 appear when I search tag:leech.

I looked at some individual cards to verify that there were definitely cards with 4+ lapses but not tagged as a leech (example screenshot below; 5 lapses but no tag). I’ve also included my leech settings below. Does anyone know why this might be happening? It’s not a big deal for my learning if it’s just a bug, but I’m curious if there’s some other explanation that I’m missing.

  1. Is the Options preset in your screenshot the one used by the subdeck these cards are actually in? If it’s for a parent deck or for other decks, those aren’t the Leech settings that apply. Deck Options - Anki Manual

  2. When did you change the threshold to 4? A note is only tagged when one of its cards crosses the current threshold, so if a card already had 4 lapses, and then you lowered the threshold to 4, that note wouldn’t be tagged until the next time that card lapses.

  3. Have you removed the tag from any of your notes – like after editing them to fix the issue? Have you imported any deck updates that overwrote your tags?

Thanks so much – it was #1 that was the issue, I was looking at the Options preset for the parent deck and assumed it applied to all the subdecks. The subdecks had the leech threshold set at 8 which is why I was seeing the discrepancy. Appreciate it!