Hi @GraemeM
It seems the sort order is ‘sort of sticky’. That is to say that under many circumstances, how you set the sort order for My Albums view will hold from view-to-view and between sessions. However, there are a couple of circumstances documented here that show how this sort order will be disrupted. If you look at the screen recording in the referenced post, is that what you are seeing? That seems like a bug to me.
Also, you’re probably aware the sort order is client dependent. That is to say that if you have a view set one way on a laptop, it may be different than a sort order set another client you have like a table.