My "Stack Overflow Meta" site details are not listed in the API, when I'm adding the "meta_site;main_site" in the types filter.

        /2.2/users/2855348/associated?types=meta_site;main_site

But where as, if I filter with meta sites only "types=meta_site", I can see the "Stack Overflow Meta" details in the API result.

        /2.2/users/2855348/associated?types=meta_site

Is this a bug or I'm missing any?