I agree here is very strange not something I have heard or seen b4. normally outland does not land until in Canada, and during covid IRCC extended COPR's etc so did you confirm you were in Canada cause that is the only reason i can see i can only find this on IRCC help centre so not sure how they would count this. but my assumption would be that only the time you spend in Canada will get counted so does not matter when you become PR, and is most likely an error with their calculator, or something they plan to review later.
I will tag
@canuck78 while we will never agree on how he/she/they talk to folks lol
he/she/they are very knowledgeable and know a lot and might be able to guide you.