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#4352 · renovate opened on May 2, 2023
1
Road to v5 🚀
#6185 · christian-bromann opened on Mar 3, 2025
21
v5 Breaking Changes Proposals / Discussion
#6584 · johnjenkins opened on Feb 4, 2026
35

bug: setting innerHTML on a scoped component hides the new content
stenciljs/core#6972 · opened on Oct 22, 2026
bug: component extending form-associated component using @AttachInternals breaks
stenciljs/core#6970 · opened on Oct 20, 2026
feat: css source map support
stenciljs/core#6964 · opened on Oct 19, 2026
bug: empty attribute is ignored on a boolean | string prop in dist-custom-elements (regression in 4.38.0)
stenciljs/core#6963 · opened on Oct 19, 2026
bug: ElementInternals methods are not functions in the hydrate app (SSR), so form-associated components throw and skip the rest of their lifecycle hook
stenciljs/core#6960 · opened on Oct 16, 2026
bug: source maps issues
stenciljs/core#6959 · opened on Oct 16, 2026
bug: SSR <style> of components without encapsulation has no sty-id, so hydration inserts every sheet a second time
Bug
stenciljs/core#6947 · opened on Oct 11, 2026
bug: changing a watched native attribute before a lazy component's instance exists throws
Bug
stenciljs/core#6945 · opened on Oct 11, 2026
1
bug: CSS custom property documentation disappears after TypeScript edits in watch mode
Bug
stenciljs/core#6939 · opened on Oct 9, 2026
bug: spec tests crash with Cannot read properties of undefined (reading 'text') when a component extends an imported class that itself extends another class
Bug
stenciljs/core#6936 · opened on Oct 8, 2026
bug: SSR content rendered into another non-shadow component's default slot is hidden after hydration (regression in 4.41.0)
Bug
stenciljs/core#6934 · opened on Oct 7, 2026
bug: scoped SSR hydration reorders children when the child is defined first
Bug
stenciljs/core#6926 · opened on Oct 1, 2026
feat: Remove discrepancy between formAssociated bool resolving and normal bool Props
Feature
stenciljs/core#6906 · opened on Sep 24, 2026
1
feat: support clonable in the shadow option of @Component
Feature
stenciljs/core#6833 · opened on Aug 18, 2026
2
bug: @stencil/store stops re-rendering components when the store is created from globalScript code (since 4.33.0)
Bug
stenciljs/core#6798 · opened on Jul 31, 2026
1
feat: avoid re-evaluating the hydrate platform closure on every SSR render
Feature
stenciljs/core#6793 · opened on Jul 27, 2026
1
feat(runtime): opt-out for per-prop componentShouldUpdate firing (4.42+)
Feature
stenciljs/core#6759 · opened on Jun 24, 2026
2
bug: incompatible value of this used for getters/setters during SSR hydration
Bug
stenciljs/core#6749 · opened on Jun 5, 2026
Streaming SSR: declarative shadow DOM conflicts with attachShadow in the constructor
Bug
stenciljs/core#6690 · opened on Apr 27, 2026
2
Stencil FOUC styles should use @layer to avoid cascade conflicts with React 19
Feature
stenciljs/core#6649 · opened on Mar 25, 2026
Using a StencilJS output in another StencilJS project
Feature
stenciljs/core#6641 · opened on Mar 16, 2026
feat: support for scoped custom element registries
Feature
stenciljs/core#6638 · opened on Mar 12, 2026
bug: Styles not rendered, gone from the DOM due to 3rd party framework interference (svelte/sveltekit)
stenciljs/core#6637 · opened on Mar 12, 2026
1
bug: component's child initial timing leads to unexpected behavior
Bug
stenciljs/core#6636 · opened on Mar 11, 2026
1
bug: dist-custom-elements do not output global styles
Feature
stenciljs/core#6630 · opened on Mar 5, 2026
3

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Issues

Issues

bug: setting `innerHTML` on a scoped component hides the new content

bug: component extending form-associated component using @AttachInternals breaks

feat: css source map support

bug: empty attribute is ignored on a `boolean | string` prop in `dist-custom-elements` (regression in 4.38.0)

bug: `ElementInternals` methods are not functions in the hydrate app (SSR), so form-associated components throw and skip the rest of their lifecycle hook

bug: source maps issues

bug: SSR <style> of components without encapsulation has no sty-id, so hydration inserts every sheet a second time

bug: changing a watched native attribute before a lazy component's instance exists throws

bug: CSS custom property documentation disappears after TypeScript edits in watch mode

bug: spec tests crash with `Cannot read properties of undefined (reading 'text')` when a component extends an imported class that itself extends another class

bug: SSR content rendered into another non-shadow component's default slot is hidden after hydration (regression in 4.41.0)

bug: scoped SSR hydration reorders children when the child is defined first

feat: Remove discrepancy between formAssociated bool resolving and normal bool Props

feat: support `clonable` in the shadow option of @Component

bug: @stencil/store stops re-rendering components when the store is created from globalScript code (since 4.33.0)

feat: avoid re-evaluating the hydrate platform closure on every SSR render

feat(runtime): opt-out for per-prop componentShouldUpdate firing (4.42+)

bug: incompatible value of this used for getters/setters during SSR hydration

Streaming SSR: declarative shadow DOM conflicts with attachShadow in the constructor

Stencil FOUC styles should use @layer to avoid cascade conflicts with React 19

Using a StencilJS output in another StencilJS project

feat: support for scoped custom element registries

bug: Styles not rendered, gone from the DOM due to 3rd party framework interference (svelte/sveltekit)

bug: component's child initial timing leads to unexpected behavior

bug: dist-custom-elements do not output global styles