There are many recent examples.
There is the issue of early learning and child care, which is also a provincial jurisdiction, and the federal government was able to negotiate with the provinces on that issue. In Alberta, there was a language clause requiring a portion of the funds for early learning and child care to be allocated to services in French. There are other areas where this occurs, for example in education, even though this element is in the Constitution.
There are other areas of provincial jurisdiction where the federal government, as a result of its spending powers, goes ahead and asks for linguistic duality to be considered.