Telligent Community on mobile scrolls to the top of thread list when returning from viewing a particular thread

Testing on an actual iPhone and Safari, I've noticed that this Telligent Community scrolls to the top of thread list when returning from viewing a particular thread.  It's not 100%, but it's highly likely.  You can almost guarantee it if you scroll down a bit on the actual thread before swiping back to return to the thread list.  I can recreate on Firefox on the iPhone too but that jump back to the top of the thread list rather than showing you it's scrolling up.  I would expect to return to the thread list where I was previously - like the desktop version.