Cant see email without formatting (html)

[R0G3R]

Hi guys, I have a big problem with my roundcabe mail.
When someone send email without formatting (text plain), I cant see then, only show the header without body, like this:

MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8;
format=flowed
Content-Transfer-Encoding: quoted-printable

But on formatting html works fine.

Roundcube just cant read email without formatting.

[ABerglund]

What version Roundcube are you using?

[R0G3R]

I have tested with 0.9.2, 0.9.5 and with 1.0-RC.