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Additional documents section is blank on ours since they requested more documents. I guess it will remain blank until they receive what they want
Mine is also blank but they didn't request additional documents. I did send some about 7 weeks ago.
 
I see,but you can already upload your additional documents even if you dont have your medical yet.As long as the immigration requested them already.
 
IRCC said via twitter:

IRCC‏@CitImmCanada 16h16 hours ago
If you applied to come to Canada temporarily, this update is a tech issue which we’re working to resolve. If you’re seeing the update for an app to come to Canada permanently, the info is accurate and part of a system update to provide more transparent info.

My medical is still blank.. who knows.......
 
I upload additional documents a week before ..2 days after i upload the documents the status changed to the additional documents are uploaded . then after the system maintenance its blank now..
 
IRCC said via twitter:

IRCC‏@CitImmCanada 16h16 hours ago
If you applied to come to Canada temporarily, this update is a tech issue which we’re working to resolve. If you’re seeing the update for an app to come to Canada permanently, the info is accurate and part of a system update to provide more transparent info.

My medical is still blank.. who knows.......
Thanks for sharing that, it's info at least haha.