This one has got me beat...

I quite often type in Māori using what we call macrons above vowels such as the one above the a in Māori. I have Māori set as the default language on my computer and to get a character with a macron, all I have to do is type ` and then the vowel (such as `a which produces ā)

It works in every single program I use perfectly... EXCEPT for mIRC

In mIRC...
ā diplays as â
ē displays as ç
ī displays as î
ō displays as ô
ū displays as û

It not only displays this way for me, but also the other person or channel I am typing to.
I do have mIRC set to display and encode UTF-8

Is there something else I haven't set correctly???

There is no other program I use that gives me this result and although the â î ô and û look similar to ā ī ō and ū, they are just not correct.

HELP?