Hi Colum, thanks for the quick response.
I would prefer to keep the popup in the Browse Sequence so
that user can also ... well, browse. But removing it doesn't help;
the "Previous" and "Next" Browse buttons are then disabled. You
need to click "Back" and "Forward" to resynchronise.
But if it is standard behaviour I would regard it as a bug;
the popup has been clicked away and the user sees the old topic,
while the browse sequence points to a different topic. If necessary
I'll make a bug report to Adobe, but I'd like to first know what
you experts say.
--- Derek