Band-aid an issue where the scroll position of any RecyclerView in a
PlaybackBarLayout would get consfused because while the main view was
present, the fragment was not inflated yet so that it would not show.
This is [kindof] fixed by moving the fragment instantiation to the
view initialization. However, sometimes the fragment might still not
be inflated. The fragment will likely be replaced with a view
eventually.
ae39054b63