fix: deduplicate posts in feed to prevent duplicate rendering#5577
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fix: deduplicate posts in feed to prevent duplicate rendering#5577
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| const plusEntryAsFirstCard = settings?.plusEntry?.flags?.asFirstCard; | ||
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| if (feedQuery.data) { | ||
| const seenPostIds = new Set<string>(); |
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I'm not against it but just waiting for Ante to check the API part
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Feb 26, 2026
Add a Set-based dedup in the items useMemo as a defensive fallback. When pages contain overlapping posts (e.g. stale cursor returns first page content as page 2), duplicates are now skipped client-side.
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Summary
useFeedhook'sitemsuseMemoWhy
When feed cache regenerates mid-session, the stale cursor response returns first-page content as a subsequent page. Even with the
staleCursor→resetQueriesmechanism, there's a brief render window where duplicate pages coexist. This client-side dedup ensures users never see duplicate posts regardless of backend timing.Related
Test plan
Preview domain
https://fix-feed-dedup-fallback.preview.app.daily.dev