In r83410/r83411 I have disabled filtering by size (faminsize/famaxsize) and by hash (fasha1/fasha1base36) for list=filearchive because of performance problems. It is possible that filtering by hash will return at a later point, but filtering by size has gone for good.
Affected wikis are those that run on version 1.17. This includes Wikimedia, to which this change will be deployed this week.
Best regards, Bryan Tong Minh