After poking into this further, this does not appear to be Go specific, and all scopes trying to use online accounts malfunction in the same way when signon-apparmor-extension is installed.
Bug 1376445 seems to be the main one to track these lookup, so I am marking this as a duplicate of that (feel free to undo this if you disagree).
I assume that this is in the context of scopes.
After poking into this further, this does not appear to be Go specific, and all scopes trying to use online accounts malfunction in the same way when signon- apparmor- extension is installed.
Bug 1376445 seems to be the main one to track these lookup, so I am marking this as a duplicate of that (feel free to undo this if you disagree).