Normally double quotes are automatically converted to single quotes at submission creation time. However, if a double quote is HTML-encoded, it can get past the filters and be included in the author's name.
2020-11-25 edit: Here is a sample submission with double quotes in Roshni "Rush" Bhatia-- http://www.isfdb.org/cgi-bin/view_submission.cgi?4839681
Anonymous
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