Google have updated the iOS and Android version of their YouTube apps. Both version contain bug fixes: the Android version of the app fixes missing video scrubber bar and action bars and the OS version contains minor bug fixes and iOS 7 compatibly.
Bug fixes and improvements, notably:
– missing video scrubber bar during fullscreen playback on some devices
– missing action bar (including search) on other devices
What’s New in Version 2.1.0
* Minor bug fixes and stability improvements
* iOS 7 compatible