httpoison v1.3.1 Release Notes
Release Date: 2018-09-17 // over 5 years ago-
When the response is larger than MaxLength, this function will return the body it received up to the last chunk, which might be a bit more than MaxLength.
Source: https://github.com/benoitc/hackney/blob/master/doc/hackney_response.md#body-2