Double conversion bug? Comments from 13 Oct 2009 and before have literal HTML Answered
UPDATE: Comments prior to 12 October also show the "double conversion" effect.
In my forum topic from last week, https://www.instructables.com/community/How-small-could-you-make-a-working-computer/ , scroll down to find comments from 12 and 13 October 2009. You will see that in cases where there were multiple paragraphs, or links included, the comment text is now being displayed as literal HTML source (e.g. '<a href=".....').
I think that these comments were entered into the database using the new CKEditor, and were then mangled recently by the automated process going through and converting old-format text. I suspect that a filtered search, for example on the string "<br />" (since the markup tokens get mapped to entities) would be enough to undo this error.