Alan Peake wrote:

It could be. One problem with temperature compensation is that the
various components of an oscillator have differing thermal masses,
thermal conductivities and hence thermal time constants. . .

This is one of several reasons that the best approach in designing an
oscillator -- or any other temperature sensitive circuit -- is to use
components that each have as small a temperature coefficient as
possible. That is, first minimize the inherent drift. Then, if you must,
compensate what drift remains.

Roy Lewallen