I've identified the problematic character(s): A symbol "Â" with code 0xC2 (U+00C2) inserted to issue's description will produce internal error on attempt to view the ticket. Problematic character can be found in "Kcharselect" under European Alphabets --> Latin-1 Supplement: Name: LATIN CAPITAL LETTER A WITH CIRCUMFLEX.
Although I was able to correct invalid description in MySQL database by editing column "description" in table "issues" I believe it is necessary to introduce a safeguard against such problems. Best wishes, Dmitry Smirnov.
signature.asc
Description: This is a digitally signed message part.