I posted this problem at ver. 6.03
but, why not fix it?

the problem is when i select/mark a multibyte character (Korean/Japanese..) , slelected characters are be broken.

this is major bug of mIRC.
Until fix this bug, mIRC can't be 6.1.
I can't understand to do not fix it.

I have finally figured out how properly test multi-byte characters in mIRC, so this should work again in the next version.