From what I've seen it appears that it was intentional in that their motivation was to give their canvassers for the separatism petition access to the data so that they could pad their numbers for the petition.[0]

They didn't mean for this to blow up in the public like this though. That part wasn't intentional. That part appears to be absolute incompetence or they just got sloppy after being treated with kid gloves by law enforcement for the past few years.

[0] https://imgur.com/a/JDltJg7