Two cases the finished-load rule got wrong. When the first snapshot was
still loading and a live refresh failed, the first snapshot arrived
late and was dropped, leaving the pane empty. And manual loads, the
Refresh button and a query, reported their failures outside the
ordering, so a late manual failure could cover newer data and an older
success could clear a newer manual failure.
The board now shows the newest data any load brought, and the error
box the outcome of the newest load that has finished. load() reports
its own fetch failures, as a live-refresh failure when the interval
started it and as a plain error otherwise, so every load is ordered the
same way. Data that arrives after a newer failure still shows, and the
failure stays, dated by that data.
L4XB
a82d587e3f