I use an AZERTY french keyboard and with the latest Blight client my keys are messed up: the letters work fine, but the special characters seem to be mapped on QWERTY keyboard at first look.
This is very uncomfortable and it didn't happen (as far as I remember) with v384.18. Current Live client doesn't have this issue.
Of course, my keyboard works fine with other programs or Windows.
And as we are with keyboard, there is a minor issue that has always existed (at least since 2004): the character û can't be created (â, ê, ô, î work fine), so I have to mispell some french words like "goût" (taste) or "sûr" (sure).
That's something I can live with, but if it is easy to fix...