My "Meta Stack Overflow" site details are not listed in the API, when I use `meta_site;main_site` in the `types` parameter. See:

        [/2.2/users/2855348/associated?types=meta_site;main_site][3]

But, if I filter for meta sites only (`types=meta_site`), I can see the "Meta Stack Overflow" details in the API result:

        [/2.2/users/2855348/associated?types=meta_site][2]

  [1]: https://api.stackexchange.com/docs/associated-users#ids=2855348&filter=default&run=true
  [2]: https://api.stackexchange.com/docs/associated-users#ids=2855348&types=meta_site&filter=default&run=true
  [3]: https://api.stackexchange.com/docs/associated-users#ids=2855348&types=meta_site%3Bmain_site&filter=default&run=true

Is this a bug or I'm missing something?