When this module is enabled it breaks all integration tests(core and contrib modules) that are using drupalLogin() method. Since the drupalLogin method tries to log in using the username this module prevents that and the test then fails.
This module should implement a logic that will bypass the only email login restriction when an integration test is running. I have currently solved this issue by implementing my own drupalLogin method which uses email as a username.
Closed: won't fix
1.0
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