Dictionary lookup on reverso site launches instead a blank page with the lookup terms at the top

[RonCam]

Page of site in reference:
http://dictionary.reverso.net/portuguese-english/cabo

where 'cabo' happens to be the word in the search box in this example, but the bug is not specific to this one word.
To test the bug, retype this word from the keyboard and <Enter>.

Result: a blank, white screen opens with "http://dictionary.reverso.net/portuguese-english/cabo" in the upper right-hand corner: The correct behavior is to re-open the same screen but with the definition of the new (or retyped) word displayed.

Severity: this website is unusable in Midori, for anyone requiring this function, for foreign-language study. Typing a new word in the box is a very common method for quickly looking up definitions of one word after another.

about:version
Midori 0.4.6 (de.twotoasts.midori_0e5d30539f96bccd78e18933d61f775a__0)
GTK+ 2.24.10 (2.24.10) Glib 2.32.1 (2.32.3)
WebKitGTK+ 1.8.1 (1.8.0) libsoup 2.38.1
cairo 1.10.2 (1.10.2)
granite No
libnotify 0.7.5
single instance libunique 1.1.6
Platform X11; Linux i686
Identification Mozilla/5.0 (X11; Linux; rv:2.0.1) Gecko/20100101 Firefox/4.0.1 Midori/0.4
Video Formats H264 [x] Ogg Theora [x] WebM [x]

[gue5t gue5t (gue5t)]

I can confirm this behavior. It seems that it's based on user-agent sniffing. By changing (in the network tab of preferences) from "Midori" to "Automatic" user agent, the site started working normally.