Right now, because the folks over in Silicon Valley are lame and lazy, a number of websites either do not function properly under Midori, or incorrectly redirect to the mobile versions of those pages. An example of the former is Google Docs, and the latter Facebook. This isn't Midori's fault; it can handle the pages just fine. The sites themselves don't know about Midori, and wrongly assume it's some mobile/old browser. Midori has the ability out-of-the-box to switch it's user agent. Since Midori is based on WebKit, the most similar user agent would then be Safari. This change should be totally transparent to users, and would only serve to resolve issues, not create them. Perhaps this should be "fixed" upstream?
HI, this is a bug of a lot of application. Facebook and G.docs are one of this. Is not a bug of Midori.