The add-on has its own icon on addons.mozilla.org. It always had one, and
AMO was never using it: the listing builds its own 32, 64 and 128 pixel icons
and ignores an SVG, substituting the default puzzle piece instead. The artwork
is unchanged - the manifest now offers PNG sizes as well, which is what AMO
actually reads. The toolbar button keeps the vector, where Firefox is the only
consumer and it stays crisp at any display scale.

Form fields and buttons have a visible edge. They drew no fill of their own,
so their border was the only thing marking them as controls, and that border was
a hairline meant for table rules. Controls now carry a boundary of their own,
stepped separately for the light and dark themes; the rules between rows stay as
faint as they were, because separating two cells and identifying a control are
not the same job.

Trends showed the seller breakdown twice. A donut and a stacked bar, one
above the other, off the same figures under two headings that said the same
thing. The bar is gone. Its colours were eight fixed values that were never
adjusted for the dark theme and could repeat once a ninth seller appeared, which
is the other reason it was the one to go.

A long sync no longer stops on its own. Firefox unloads an extension's
background page after about thirty seconds of inactivity, and this extension
waits far longer than that on purpose - 8 to 20 seconds between requests, and up
to three minutes every 25. Those waits are not activity, so Firefox was
unloading the extension mid-sync and the run simply ceased: no error, no failed
page, nothing in the log. A sync now keeps the page loaded for as long as it is
running, and lets go when it finishes.

An interrupted run says so. One killed that way was left recorded as
running, so the dashboard went on describing a sync that had stopped hours
earlier and the history showed it as running indefinitely. Only the popup told
the truth. Interrupted runs are now settled when the extension next wakes, with
a desktop notification, and marked paused rather than failed - everything
already archived is kept and Resume carries on from the last checkpoint.

The Overview counters update again. The progress bar advanced while the
tiles beside it stayed at whatever they read when the page was opened.