Different intervals showing up within a deck

Over the last several weeks I’ve noticed my decks have different intervals for easy within a single deck.
It’s confusing bc different cards of a single deck should obviously be subject to the same set of rules.
See the pictures below of two cards in a row. They are in the same deck, they were created while in lecture, back to back. It is my first time through this deck and i haven’t ever seen these cards.
The pictures are from mobile but this happens on my mac too


If you are worried that sometimes it’s 3 days and sometimes it’s 2 days, this is intentional behavior due to the fuzz factor. It’s not something to worry about.

Woops looks like that’s it. Dumb question then. Thank you for your prompt reply