There have been many instances where government has appealed. I guess in some respects that seems to be viewed as par for the course. I will note that in 2017 the government put forth litigation guidelines or standards that are supposed to reduce that.
I have been a litigator. As somebody who has read many Supreme Court of Canada cases, I've seen that government will often put forward positions that make you wonder if they are really facilitating reconciliation or decolonization.