When asking for the sequences located on schema "toto" I end up with those stored in all schemas.

Among other things the consequence is that the SchemaMigrator (my actual use case) create the sequences only on one schema (because when initializing other schemas the sequence "already exist"). It's also because the schema migrator totally ignore the schema name from the SequenceInformation but it does not make much sense to me that it end up with sequences from other schemas when asking for them in the first place anyway.