DIdn’t see a topic on this yet. When I go to do my lessons, I am getting items from as far back as level 7. Probably today’s update is to blame?
Did you read the announcement where you commented first? The 時 suffix was added to level 7
Well now I feel silly, I did read it but skimmed past the part that said they would show up as new items.
See WaniKani Updates June 28, 2017 - #26 by viet
Answered OP’s inquiry there.