The new Facebook beta app for Windows Phone 7 has been updated to version 18.104.22.168, and brings along a slew of bug fixes.
The update adds a loading message, fixes an issue with the send message button being greyed out, and issues with not being able to load older messages by scrolling was also fixed.
The app also appears smoother, and has better language support. Issues with the wide tile in Windows Phone 7.8 has also been fixed.
The app now also supports 256 MB devices.
The beta version can be found in the Windows Phone Store here.