I generated a Latios on PkHex, trying to imitate a legal one caught in Ultra Sun (Ultra Space Wilds, lvl 60), normally pokémons caught there shouldn't have relearned moves. However as the capture shows we can see that pkHex sent me an error message. Is this an error from PkHex or Lati@s (Yes for Latias it's the same) are exceptions to this rule?
Thank you in advance if you're able to enlighten me.