Finishing up my new Level 5 unlocks, I got to the radical Go (行) which includes (and mentions) the radical for Loiter (彳) in it’s mnemonic. It’s not really an issue for me, since 行 is an exceedingly common kanji that I already recognize, but I just wanted to make a note of it, since it seems weird (and slightly out of order) to have a radical in Level 5 mention another one that users won’t learn until the next level. As you can see, I had to go search for the Loiter radical just to be sure that I know what was being referred to here.
I noticed this recently as well. I was going to build a collection of small mistakes like this that I could email to WaniKani when I reach a higher level. I thought it would take up more time for both sides reporting each item individually.