If you can enter the US, you could enter Canada through land border without a PR card, though you'd need to check which documents you need for this. Edit: there are some extra conditions for this, like you cannot enter in a public vehicle.
Otherwise, you can apply for PRTD from outside of...
So, Hon. Sean Fraser has moved on to better things; he spent less time with IRCC than I've been waiting for my citizenship application to be processed.
Who am I supposed to blame everything on now?
Quite a few people who applied for citizenship in 2019-2021 had to renew PR cards before their citizenship application was finalized.
I don't know if it slows anything down, somehow I doubt it.
You will need the card if you're not a citizen by the time you need to travel, otherwise you'll have...