If you want 6 cards each for the bottom 2 decks, you should ensure the top decks and bottom decks are using different presets, and then set the preset for the bottom 2 decks to be 6 cards.
The daily limit is not reset each time you change the options. If you have already reviewed 6 cards in a deck, and you change that deck’s limit to 6, you will see 0, because you’ve already done those cards. You’re seeing 0 in the upper decks when you make a change, because they or their children have already shown 6 cards that day.
This is not the case. Is a new deck and no study history. Please deep look the first gif. When i set the limit to 9999 the real number of cards in every deck apears.
After set default to all sub decks to eliminate any doubt, i choose one preset for “Frases” sub deck and another preset for “Vocabulario”. Even after do this, the system not have the expected behavior like you said.
As i said, the problem is when we use ‘deck override’ option.
In this case, the “buried” card is in another deck, with their limits.
So if i have 1 card, with 6 notes, but 3 in one deck and 3 in another deck by “override deck” option, the system do not follow the limits of this decks as expected.
You can test with my deck:
In this case, to check 3 words and 3 phrases, the 3 phrases needs to be from different notes learned in the first 3 words.
When subdecks are constrained by parent limits, how many cards each shows will depend on the gather order you have selected, and how many cards are available after burying.