ListView preferredHighlightBegin/End fails intermittently

Running the tesla demo, after passing the initial screen, the "current" item in the
horizontal list is supposed to stay centered. It does most of the time, but ever so
often for no apparent reason it fails, and the current item ends up flush to the left
side of the screen. Then after a minute (of e.g. scrolling the list) it returns to being
centered.

This issue has been seen since 4.6.2, but is difficult to reproduce.