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Hi @pixelmm,
Thank you for reporting this issue.
v. 2.2.2 was still not public but was already on the repository. Before publication, we changed something in the code. All those differences reported by WordFence are related to the changes done before the publication.
Probably, WordFence doesn’t read the most updated files, but the old files of v. 2.2.2.
In any case, there is no reasons to worry about those warnings. I don’t see anything strange in the code.
I hope it helps.
Have a great day!
Jose