When edit/insert data in table, strings with non-ansi characters (for example ąęńóżź in pl_PL locale) are not saved to database or this chars are replaced with "\0".
TOra version: 2.1.3 from ubuntu 14.04 repositories.
Database: "PostgreSQL 9.3.5 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2, 64-bit"
Libc: 2.19.0ubuntu6.1