Forums Bug Reports v6.14 cannot display Chinese on the 'Tahoma' font

You can find the problem as this

First right click on the chat window and come into the 'Select font' window. Then choose the 'Tahoma' and the script on the right chosen as 'Western'. So now you can input the Chinese in the line and find all the chinese cannot be displayed but '????' instead.

This bug is only found in the v6.14 and has been not in the v6.12.

the next version will fix the bugs

this problem still exists in 6.15 and 6.16

many other fonts all have this question,
I wonder why this bug exist for so long time ?