Unicode Tag links are not not working

Question

Hi 
I am running 1.7.0-beta-2 version. On my site, the Tag links with Unicode tags are not working. Roman letters in tags seem to be working fine. 

Here is an example of Unicode and redirects to main tags page.
http://www.transliteral.org/QnA/tag/%E0%A4%B9%E0%A4%BF%E0%A4%82%E0%A4%A6%E0%A5%82

Here is for a Roman letter
http://www.transliteral.org/QnA/tag/transliteral

Please help!!

 

Comments

I have same problem for cyrillic letters.