[DevTools] Separate breadcrumbs with »#35705
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eps1lon merged 4 commits intofacebook:mainfrom Feb 5, 2026
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| // If we're already overflowing, then we don't need to re-measure items. | ||
| // That's because once the owners stack is open, it can only get larger (by drilling in). | ||
| // A totally new stack can only be reached by exiting this mode and re-entering it. | ||
| if (elementsBarRef.current === null || isOverflowing) { |
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We don't need the isOverflow check anymore since we don't have the resize observe connected when we're overlfow.
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Summary
Stacked on #35700
This avoids a common confusion with the Suspense breadcrumbs by making it clearer that this is a hierarchy. Applied the same styling to the Owner Stack in the Components tab.
Required a refactor how we measure the combined item size which isolates individual Components better and actually uses ResizeObserver instead of just recalculating when the number of owners changes.
How did you test this change?
CleanShot.2026-02-05.at.18.01.17.mp4