this post is old but here’s an update to date updates:
I travelled last week to Cuba with RTD. My PR application hasn’t been processed yet. All officers treated the RTD as a passport there were no questions.
Coming back to Canada the officer at the Canadian airport didn’t request any documents such as work permit, notice of decision, PR etc… it’s always safe to have them on you just in case. The 1st officer sent us back to immigration section as we had RTDs but they only registered entry and let us go in. Was super easy to travel. The only thing you need to make sure of if the country you’re going to needs a Visa. I also got my US visa on the RTD no issues at all.