In the WaniKani mnemonic, was “individual” intended as a meaning, or was it meant to be “each individual,” included below for reference:
Each self refers to each person or individual.
My explanation was getting messy so I just deleted it.
I’ll just say… can you find EJ-JE resources that don’t include the meaning “individual”?
But I see it used in multiple English-Japanese dictionaries (Kenkyusha for example). It seems that plenty of sources would disagree? It may not be a meaning applicable to all usages, but it’s hard to say that it ‘should not’ be a meaning when multiple, independent sources list it as a meaning.
For example if you look up 各自 on ALC you will find this phrase with this translation:
各自の判断で
at individual discretion
I dunno if I’d say “quite misleading”. Given the bolding, it’s barely even ambiguous - if “each individual” had been intended, it would have read " each person or each individual". But yes, you could make it clearer by swapping the two meanings.