Fairly New Yahoo! Mail Glitch

Can
anybody
tell
me
why
email
replies
I
make
using
Yahoo!'s
web
client
makes
the
original
message
look
like
this?

Yes, it’s f’n annoying. Yes, I will report a bug but figured a rant on the blog was in store. I just started getting this here in the past few weeks where it posts one word per line. Bah.