fix: never mark a child effect root as inert#18111
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A nested `$effect.root` was marked `INERT` during `pause_children`, which caused it to stay in that state indefinetly after the rest of the parent tree was destroyed. Consequently deriveds inside no longer update and cause warnings. This fixes it by not marking nested `$effect.root`s as inert, just like nested `$effect.root`s are not destryoed and instead become a new root. Fixes #18097
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Rich-Harris
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Apr 14, 2026
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dummdidumm
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## svelte@5.55.4 ### Patch Changes - fix: never mark a child effect root as inert ([#18111](#18111)) - fix: reset context after waiting on blockers of `@const` expressions ([#18100](#18100)) - fix: keep flushing new eager effects ([#18102](#18102)) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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A nested
$effect.rootwas markedINERTduringpause_children, which caused it to stay in that state indefinetly after the rest of the parent tree was destroyed. Consequently deriveds inside no longer update and cause warnings.This fixes it by not marking nested
$effect.roots as inert, just like nested$effect.roots are not destryoed and instead become a new root.Fixes #18097