'admin' app saves non-latin descriptions and user full names as garbage. The only cure I could find was to remove comment tags from the 'Set Character Encoding' filter and its mapping in 'web.xml' for 'admin' app. If this filter is necessary for normal work of the application, I believe it's better to have it enabled in the distribution...
*** Bug 29485 has been marked as a duplicate of this bug. ***
*** Bug 31143 has been marked as a duplicate of this bug. ***
*** Bug 31381 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of 29091 ***