Pokemon in X/Y being marked as illegal

[WonderSquid]

Apologies if this has already been posted about. Been noticing wild-caught Pokemon in X/Y have been getting flagged as illegal. Not sure why -- included are a couple Meowstics that are essentially the same in terms of the circumstances they were obtained in. It's been flagging seemingly every single vivillon as illegal as well (collected a bunch randomly just to check and it doesn't seem to like any of them. 

I've had a few other things suddenly flagged as illegal that don't make much sense but this one stuck out to me the most (I don't know how likely it is that every single Vivillon I've ever gotten just so happened to be genned).

bug check.zip

[Kaphotics]

known issue; hopefully will be resolved in future commits 

https://github.com/kwsch/PKHeX/issues/2603

[WonderSquid]

Oop, sorry. Thanks so much for the response, and happy new year!