In each of the separate lawsuits state regulators filed, dozens of internal communications, documents and research data were redacted — blacked-out from public view — since authorities entered into confidentiality agreements with TikTok.

But in one of the lawsuits, filed by the Kentucky Attorney General’s Office, the redactions were faulty. This was revealed when Kentucky Public Radio copied-and-pasted excerpts of the redacted material, bringing to light some 30 pages of documents that had been kept secret.