Occasionally someone edits a bunch of posts incorrectly in the same way. These edits seem to be made in good faith, but the editor's grammar/syntax/spelling is consistently incorrect. Perhaps this has been covered elsewhere, but how can they be contacted and made aware of their error?
One example I encountered recently was someone trying to change every upper case
I (i.e. the first-person pronoun) into lower case ones. Since most other parts of their edits were fine, they seemed to be genuinely trying to improve the answer. If their one bad "habit" could be corrected, they could help improve the site.
Would you comment on the post they are trying to edit? But that seems a bit odd, especially if they never look at it again. Just keep rejecting their edits until they stop?