The only reason I don't like the FB app is because you have to go to the browser to view pics.
I like Bloo, you click on the pic and can view it right in the app. If the FB app could do that, I would come back in a heartbeat!!
I've been able to view pictures within the app for the last couple of version at least.
There seems to be some weirdness if someone shares a picture from someone else's gallery, that takes me to the browser. The original post, however, opens the picture right in the app.