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When an item is dropped, the `DropListRef` resets the DOM to its pre-drag order and emits the `dropped` event. With zone.js change detection runs synchronously when the `NgZone` is exited so the new order is rendered before the browser paints. In zoneless apps change detection is scheduled asynchronously which allows the browser to paint the stale order in between, causing the dropped item to blink. Fixes angular#33837.
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When an item is dropped, the
DropListRefresets the DOM to its pre-drag order and emits thedroppedevent. With zone.js change detection runs synchronously when theNgZoneis exited so the new order is rendered before the browser paints. In zoneless apps change detection is scheduled asynchronously which allows the browser to paint the stale order in between, causing the dropped item to blink.Fixes #33837.