I see, then yes it’s what happened as all the new cards came up for review the next day. Reading the more detailed description on Anki Desktop it seemed that new cards can only be burried by related new cards: “Whether other new cards of the same note (eg reverse cards, adjacent cloze deletions) will be delayed until the next day”.
Because of this I will have another issue. I have a new cards/day limit of 20, so if there are 0 related new cards of the previous day, then I will have 20 new cards Japanese > English (which I don’t want). Is there a solution for this issue? Using a filtered deck would it be possible to set a limit of 10 for the template Japanese > English?