Just installed 6.32 and got the same problem, it fails where 6.31 worked.
As in 6.31 changing the width of the window alter the visualization of the characters but there is still no way to have all them displayed correctly and even if sometimes the characters on the last line are displayed correctly the overall situation is worse (whereas in 6.31 it usually worked for the first few lines and then it fails on the others).
The "Fixed multi-byte text-wrapping display issues." doesn't seem to work.
If you need some screenshots and/or more infos let me know, I'm running win xp sp2.
If you want to test it you can find here http://dpaste.com/52723/
3 lines with the hiragana, katakana, greek and coptic characters that are displayed correctly on 6.31 and as a list of "ã", squares and some other characters in 6.32.