NameSchemaService Service doesn't take into account string with UTF-8 characters, this leads to an inconsistent string when Doctrine try to persist the ContentObject
Especially the problem occurs when a special character is at the end of the $name string, example ($limit is by default 150):

World Championship gold for the Swiss rowers Lucas Tramèr and Simon Niepmann, bronze for Michael Schmid and 9th place for Mario Gyr and Simon Schürch.