Cyrilic equal problems

I have found the problem with equal, ignoring case. The problem is that when comparing two identical Cyrillic strings, equal have a false result.
Example:
тра==ТрА

Equal will have a false result.

Same problem with, to upper, to lower, case dont work with Cyrilic.

Hi Rumata,

Thank you for reporting this issue to us. I’ve submitted a bug report for this issue, for your reference, the bug number is UE-16018. I’ll be sure to respond here again once the issue is fixed.

Have a nice day,