I just got off the phone with IRCC (for someone else, not me), and was reminded that it is risky to leave Canada, even on a vacation, when you are in the PR process. Many have left and returned without any issues but the person I called for received their first PR confirmation email in March of 2022.
IRCC paused the application, asked for the return date, and advised them to confirm the return to Canada, which was done -- exactly as advised. Since then, after many calls, webforms, emails & MP involvement, IRCC has only just restarted the confirmation of PR process, a full year after receiving the initial PR email. But of course, after a year of waiting, much has changed. This person thought (wrongly) that they had received PR and was only waiting for the eCOPR & PR card, so they kept working beyond the work permit validity and beyond the 90 day restoration period. So, now they have to wait to see if the need for a TRP (which is in process) will cause a PR rejection, or if the TRP will be processed and then a new PR landing process will restart.
During the vacation/pause, the file was put on hold and was transferred back to Whitehorse from the Calgary landing office. There, after the file was unpaused in May of 2022, an agent took a second look at the file and realized that the second IELTS provided to IRCC's ADR request for one, was done AFTER the original application date. The file has since been in 'limbo' for over a year, because technically the IELTS should be dated before the application date. It looks like they have 'forgiven' this issue, but it's not certain.
So, by leaving the country, the PR was paused. By pausing, the file got transferred back to Whitehorse. Because the file was transferred back, another agent took a second look at the file. By taking a second look, another set of eyes found an issue. Because there were issues, the file has been on hold for over a year (after already passing the initial PR requirements).
Perhaps this is a rare situation, but I'm sharing this because it may help someone else, and the IRCC agent specifically said, "I always recommend that people do not travel during a PR application." IRCC is not supposed to reject you in this pathway for being out of the country, but a second look at a file may raise new issues that another agent missed or let go by. Best wishes!