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zogstrip · 4월 20, 2026, 10:39오전

이것은 "경쟁 조건(race condition)"으로 보이기 때문에, > 브레드크럼 구분자를 표시/숨길 시점을 감지하기 위해 다른 방법을 시도하고 있습니다.

github.com/discourse/discourse

FIX: Render breadcrumb separator from data instead of `:last-child` (#39371)

main ← fix-breadcrumb-separator-race

merged 12:41PM - 22 Apr 26 UTC

ZogStriP

+20 -9

The breadcrumb `>` separator was rendered on every item and hidden on the last o…ne via a `li:last-child` CSS rule. That worked for static breadcrumbs, but `DeferredTrackedSet.add()` defers item registration through `next()`. When navigating into a child route (e.g. `/admin/backups/logs`), the new `DBreadcrumbsItem` mounts and renders before its `add()` flushes — leaving the previously-last `<li>` as the DOM's actual `:last-child` for one tick, so its `>` disappears until the next re-render brings everything back into sync. On the backups page, frequent MessageBus updates during a running backup made that window visible: the arrow would intermittently drop until the user navigated out and back in. Bind separator visibility to the tracked-set index instead: `DBreadcrumbsContainer` passes `@isLast` to each item, and `DBreadcrumbsItem` only renders the separator when `@isLast` is false. The CSS rule is gone. Separator presence now tracks the authoritative Set state rather than the DOM's transient structure, closing the stale-last-child window. https://meta.discourse.org/t/400730

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