Last modified: 2010-03-31 15:26:43 UTC
When a new page is created with a blanked comment field, the response to a list=recentchanges query will contain a "comment" field with an empty value, while the response to prop=revisions (for the same revision) will not contain a "comment" field at all. I believe this inconsistency should be removed or be noted in the documentation.
Fixed in r64440.