My wife's mother emigrated from Canada as a child and even though her mother had to renounce citizenship at one point, my wife fell under the law to which you refer.
We went ahead and went through the process to get her citizenship recognized and were successful in doing it. It's a pretty easy process, though a little time consuming. We thought we best do it until they change their minds! If you may want to move to Canada I'd suggest you go ahead and put in your paperwork. It won't cost you much time, depending on what documentation you need to get from your mother.
Yeah, after finding out about it, I did submit the paperwork. I'm presently waiting for everything to get approved (they said the lead time was about a year).
We went ahead and went through the process to get her citizenship recognized and were successful in doing it. It's a pretty easy process, though a little time consuming. We thought we best do it until they change their minds! If you may want to move to Canada I'd suggest you go ahead and put in your paperwork. It won't cost you much time, depending on what documentation you need to get from your mother.