Error inserting Unicode character in text block

When I try to insert in a text block the Unicode character Line Separator
(U+2028) an error occurs.

%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5