I guess lots of us who sent Passport scans to Vancouver and Surrey are still waiting... Not sure what is going onI am being processed by the Vancouver office as well.
I was OOC in May when completed my test and got the same passport and boarding pass request from the same email address on June 2nd.
I sent the requested scan copies on June 3rd and still waiting for any update since then. No duplicate request so far.
LPP shows in progress, Citizenship not started, last update - in May when Test changed to completed.
I will reply to your message here if I got any update further on. Pls do the same if you hear back from IRCC.
Good luck to us all
Don't know what their criteria is either for requesting passport scans... I wasn't out of country and I have a decent margin