Just in order to help people make informed decisions, there are a few cases for people to consider, of course every circumstances are different but I believe it matters as many say they've never heard of someone being refused for living somewhere else:
Notice that it takes an enormous amount of time and effort to find on this forum or on Canlii, relevant information/cases and therefore I will not look for more at this time.
https://www.canlii.org/en/ca/irb/doc/2010/2010canlii95383/2010canlii95383.html
https://www.canlii.org/en/ca/irb/doc/2009/2009canlii29470/2009canlii29470.html
The panel finds that
subsection 133(1)(
b)
[9] of the
IRPR, read in conjunction with
subsection 120(
b)
[10] of the
IRPR, is clear and requires no in-depth analyses. The appellant had to meet the requirements of
subsection 130(1)(
b) from the lock-in date of his sponsorship application until the visa officer made a decision on the foreign national’s application for permanent residence in Canada. The panel finds, on a balance of probabilities, that, while the appellant may have been domiciled in Canada, he was residing in China during the period in question. Furthermore, since he is a permanent resident and not a citizen, the leniency provided for in
subsection 130(2)[11] of the
IRPR is of no avail to him.
Note here that both people above are citizens and therefore the leniency would apply BUT the leniency does not eliminate the risk for other breach of eligibility.
https://www.canlii.org/en/ca/irb/doc/2012/2012canlii98543/2012canlii98543.html
To this end, in order to qualify as a sponsor for the purposes of the legislation, the appellant must be a Canadian citizen or permanent resident who resides in Canada. An exception is made by
section 130(2) of the
IRPA for Canadian citizens who do not reside in Canada. The appellant, however, is not a Canadian citizen, but rather, a permanent resident of Canada.
133.(1) Requirements for sponsor -- A sponsorship application shall only be approved by an officer if, on the day on which the application was filed and from that day until the day a decision is made with respect to the application, there is evidence that the sponsor
(a) is a sponsor as described in section 130;
Furthermore:
https://www.canadavisa.com/canada-immigration-discussion-board/threads/does-temporarily-living-seperate-and-apart-affect-regulation-124-a.665624/
After a long wait of close to 30months my application was refused by an immigration officer on grounds that
me and my wife have been living seperate and apart in two different cities in Canada and hence the Officer
concluded that I am not eligible for permanent residence in canada class because regulation 124(a) state that a foreign national is a member of the spouse or common law partner in canada class if they are the spouse or common law partner of the sponsor and cohabit with the sponsor in canada.
The couple is married, but failed to cohabit in Canada (and both were in Canada) therefore got refused, I would suspect that living in different countries would only make it worse.
Hopefully this provides more information to determine whether this is a risky choice or something worth pursuing. There will be plenty of cases of people who were fine despite being in the same situation or similar I am sure, but that depends on each person's luck.