Motorola Droid Bionic :: Official Facebook App, Can't Add Sync Account?

First post, as I'm an Android developer, but just got my first phone with Motoblur. So far, I have to say that the Blur interface has been disappointing as a power user, relative to the stock interface (many things that the stock Android does well, Blur doesn't, imho). But, that's not why I'm here...I'm here because I've noticed, under the new Bionic, that the official Facebook for Android app doesn't allow me to use it to setup a sync account. In the accounts menu, if I click "Add an account," it displays the list of possible account types. Clicking on the FB for Android account type appears to do nothing. Also, for any other apps that didn't come stock with the phone, they also can't seem to setup new accounts. Twitter is the only exception for this behavior. The official Twitter for Android app does appear to bring up a next screen when you choose that type.

Is it that Twitter is implementing some API the rest are missing? All of the example sync adapters I can find have this behavior where nothing happens when you try to use their functionality of "Add an account." Why is selecting those account types a no-op instead of bringing up the usual credential input screen that normally follows selecting a type of account?