The [authentication docs](https://api.stackexchange.com/docs/authentication) state that the [`scopes` parameter](https://api.stackexchange.com/docs/authentication#scope) of the URL to which a user should be directed to, for implicit authentication, should be a list of scopes that are delimited by either commas or spaces.

While both delimiting options worked with the old one, **delimiting with commas doesn't work with the new authentication dialog**.

When delimited **with commas** (as `scope=read_inbox,no_expiry,write_access,private_info`) or by the HTML-encoded `,` character `%2C`, the authentication dialog reads,

          [![Bad result][1]][2]  
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <sup>(Incorrect)</sup>

When delimited **with spaces** (as `scope=read_inbox no_expiry write_access private_info`), it reads,

&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [![Correct result][3]][4]  
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <sup>(Correct)</sup>


  [1]: https://i.sstatic.net/Tt8lkm.png "Click for larger view."
  [2]: https://i.sstatic.net/Tt8lk.png "Click for larger view."
  [3]: https://i.sstatic.net/ydBU5m.png "Click for larger view."
  [4]: https://i.sstatic.net/ydBU5.png "Click for larger view."