JTable sorts symbols in russian range of UTF-16 table incorrectly.

For example, we have column with symbols [Ѐ, Ё, б].
In asc order it should be - [Ѐ, Ё, б]
but we got [б, Ѐ, Ё]
In desc order - [б, Ё, Ѐ] expected,
but we got [Ё, Ѐ, б]

May be, problem is in TableRowSorter introdused in JDK 1.6.