Is it related to this? https://bugzilla.wikimedia.org/show_bug.cgi?id=26339I don't think so, because it seems to be resolved by stating explicitely it is truncated. But not impossible.
Right right. I don't mean that it is an example of the bug, which is rsolved, I mean this is an example of the patch introduced to fix that bug. The resultsize is apparently larger than this threshold $wgAPIMaxResultSize
Fortunately that does not say something like $wgAPIMaxResultsYouCanEverSee, the question is how to page forward using a continuation:
http://www.mediawiki.org/wiki/API:Query#Continuing_queries
I'm reading query.py
jrf