Invalid legality check on legal Pokemon. Legends Z-A

[CyberZero]

Finished both the main game and DLC last night and today I opened my save for the first time on pkHex and I got this error. I haven't modified anything.

[Kaphotics]

This is mentioned in the changelog/release notes circa 11/16:

- - Crossovers are not currently handled for detecting location IDs. Generating from encounter template is 100% legal.