Email address comparison (e.g. on login) is case-sensitive. In ‘real-life’, it is not. A case-insensitive comparison (a different collation and different comparison in generated code) would make the app behave like expected.

Submitted by Sander Vermolen on 20 May 2011 at 13:55

The generated authenticate function for login uses a query (for the first credential property). Case sensitivity is determined by the database table collation setting. In your case it was manually changed to binary instead of utf8 - default collation, which causes case-sensitive comparison.