From:My question is, will my wife's spousal application be rejected if I mailed the application to CPC Sydney,NS from India while being stranded in India due to COVID19? I am a permanent resident and not a citizen. I believe a permanent resident has to be in Canada to sponsor spouse but given COVID, I am in India.
https://www.canada.ca/en/immigration-refugees-citizenship/services/immigrate-canada/family-sponsorship/spouse-partner-children/eligibility.html
'You can’t sponsor someone if you’re a permanent resident living outside Canada."
If you can prove you are living in Canada: residence, bill paying, tax paying, job etc., then I might argue you can sponsor still. I would try and return to Canada as soon as possible to remove any doubt, but that's just my interpretation and your mileage may vary.