I am in same boat, Test completed, Interview (In person done) Aug-08, Background check complete. Language is only complete and Physical Pres as well as Prohibitions still pending
They have not stated either ways if any other documents are needed at this time on my end. When called customer service, they said what you see on Tracker is what they see. Interview was done, included checking IDs, PR Card, I-94 (Travel History), Each pages of all passports were checked. The officer just mentioned that there are a few new addresses are on file, which you've not declared. Submitted webforms as they were prior attorney addresses (Remove Representative via 5476 form), which are accepted now. Also, as I had a lot of travel, maybe it could be one of the reasons taking time, officer stated that they need to do more review as I'd a ton of documents + 50 travel entries!