A screen's enter did not yield its navigate exactly once: count is 0
when the burst ended without it, 2 when it yielded it a second time. The
screen's own navigation event is one chain entry, so either is a refusal of
the definition's burst, and the enter is rolled back like any failed one.
A screen's enter did not yield its
navigateexactly once:countis0when the burst ended without it,2when it yielded it a second time. The screen's own navigation event is one chain entry, so either is a refusal of the definition's burst, and the enter is rolled back like any failed one.