w3c/css-houdini-drafts Issues

Last updated May 16, 2026, 7:41:50 AM UTC.

56 out-of-SLO untriaged issues
27 issues with out-of-SLO pending edits

Untriaged

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Issue	Title	Within SLO	On maintainers' plates for	Time past SLO
#461	Serialize property display	❌	8.7 years	8.7 years
#463	Serialization description for position property	❌	8.7 years	8.7 years
#742	[css-typed-om] Add detail considering image state change and repaint.	❌	8.1 years	8.1 years
#854	[text-layout] Houdini and text layout	❌	7.3 years	7.3 years
#887	[CSS-Typed OM] CSSScaleValue should accept one argument	❌	7 years	7 years
#891	[css-animation-worklet] Explainer feedback	❌	7 years	7 years
#895	[css-paint-api][css-typed-om] Reifying inputArguments	❌	7 years	6.9 years
#896	[css-paint-api] Computed vs. specified values in inputArguments	❌	7 years	6.9 years
#909	[css-paint-api] IDL for PaintWorkletGlobalScope is invalid	❌	6.9 years	6.9 years
#914	[css-paint-api] Typo in registerPaint steps	❌	6.8 years	6.8 years
#915	[css-paint-api] invoke a paint callback steps seem to be confused about what object types they are working with	❌	6.8 years	6.8 years
#916	[css-paint-api] Typo in invoking a paint callback	❌	6.8 years	6.8 years
#917	[css-paint-api] Use of entries in the paint class instances map needs to check that they actually exist	❌	6.8 years	6.8 years
#919	[css-paint-api] Function links are broken	❌	6.8 years	6.8 years
#920	[css-paint-api] Invoking a paint callback needs to define how input arguments are passed	❌	6.8 years	6.8 years
#924	[css-paint-api] Enable inputProperties to provide full definitions	❌	6.8 years	6.8 years
#950	Font Table Access discussion	❌	6.7 years	6.6 years
#951	Font Enumeration API discussion	❌	6.7 years	6.6 years
#957	[css-animationworklet] Will it be possible to control the scrolling position?	❌	6.6 years	6.6 years
#969	[css-paint-api] drawImage() throws error when url() is passed. Why are ImageBitmap, OffscreenCanvas not defined at PaintWorkletGlobalScope?	❌	6.6 years	6.5 years
#970	[css-paint-api] Math.random usage in CSS Paint API leads to jitter in painted effect.	❌	6.5 years	6.5 years
#973	[css-paint-worklet] <template> fragment elements' inline background paint is not working	❌	6.4 years	6.4 years
#976	[css-animationworklet] Retrieve computed data (ie velocity) from AnimationWorklet	❌	6.3 years	6.3 years
#1007	[css-custom-functions] user-defined custom CSS functions	❌	5.7 years	5.7 years
#1008	What if we could define custom, pseudo-classes?	❌	5.7 years	5.7 years
#1012	[css-animationworklet] Custom easing	❌	5.5 years	5.5 years
#1013	[css-paint-api] Invalidate paint when `devicePixelRatio` changes?	❌	5.5 years	5.5 years
#1015	[css-paint-worklet] How to manipulate pixel data of CSS PaintWorklet context	❌	5.4 years	5.4 years
#1018	[css-box-model] container shape property	❌	5.4 years	5.4 years
#1022	[css-paint-api] Should PaintRenderingContext2D have a filter attribute?	❌	5.2 years	5.2 years
#1024	This sounds like a pretty good fit for the current API that we have exposed. E.g. you could imaging something like:	❌	5.1 years	5 years
#1025	[css-animationworklet] Velocity-only spring use-case	❌	5.1 years	5 years
#1055	[css-paint-api] Add CanvasFilters to paint worklets	❌	4.5 years	4.5 years
#1057	[css-paint-api] Registering properties from within a worklet.	❌	4.5 years	4.5 years
#1071	Use .item(index) in CSSTransformValue, CSSNumericArray or any array like interface	❌	4 years	4 years
#1074	[css-layout-api] Add markup to define `layout()`	❌	3.9 years	3.9 years
#1078	[css-typed-om] "create a sum value" behavior is undefined for CSSMathClamp type	❌	3.6 years	3.6 years
#1079	[css-animation-worklet-1] Broken references in CSS Animation Worklet API	❌	3.5 years	3.5 years
#1082	[css-layout-api] Is there any way to access the properties of children of an element that uses `display: layout(foo)` ?	❌	3.3 years	3.3 years
#1093	[css-typed-om] what is "hint" in "add two types" step 3	❌	3.1 years	3 years
#1094	[css-typed-om] ratio	❌	3 years	3 years
#1095	[css-typed-om] StylePropertyMapReadOnly.get return type should be nullable	❌	3 years	3 years
#1100	[css-properties-values-api] Use CSSOMString for JS API	❌	2.9 years	2.9 years
#1101	[css-typed-om] structuredClone for typed-om objects	❌	2.9 years	2.8 years
#1102	[css-typed-om] Add Serializable attribute to css-typed-om objects	❌	2.8 years	2.8 years
#1111	[css-properties-values-api] Use the appropriate ref link for "parse"	❌	2.6 years	2.6 years
#1114	[css-typed-om] Simplify CSSMathValues when creating internal rep.	❌	2.5 years	2.5 years
#1118	[scroll-customization-api] is there still interest/ongoing discussions for scroll customization?	❌	2.4 years	2.4 years
#1123	[css-animation-worklet-1] how to enable CSS.animationWorklet	❌	2.2 years	2.2 years
#1161	[css-typed-om] Serialization of 2D CSSScale should never skip the second value	❌	5.9 months	5.6 months
#1163	[css-properties-values-api][editorial] CSS.registerProperty() requires inherits argument	❌	3.8 months	3.5 months
#1164	[meta] drafts.css-houdini.org server seems down	❌	3.7 months	3.5 months
#1167	[css-typed-om] Add `styleMap` to `CSSNestedDeclarations`	❌	2.9 months	2.6 months
#1169	[meta] ishoudinireadyyet.com is down	❌	2.4 months	2.2 months
#1171	[css-properties-values-api] Allow comma-separated names in @property prelude	❌	1.4 months	1.2 months
#1172	[css-typed-om] Make CSSUnparsedValue indexed getter/setter linkable	❌	1.2 months	1 month

Need Edits

Try to apply the edits requested in these issues within 2 weeks. [ More Info ] [ See these issues on Github ]

Issue	Title	Within SLO	Has needed edits for	Time past SLO
#488	Add full table of properties and what CSSStyleValues types they normalize to	❌	8.6 years	8.5 years
#465	[css-properties-values-api] PropertyDescriptor::name unnecessarily uses CSS syntax	❌	8.6 years	8.5 years
#285	[css-properties-values-api] mention how animations involving invalid token stream values work	❌	8.6 years	8.5 years
#632	Restrict workers that `CSSStyleValue` is exposed to	❌	8.3 years	8.2 years
#556	[css-typed-om] Serialization of CSSStyleValues constructed from string	❌	8.2 years	8.2 years
#744	[css-layout-api] Need to select policy for selecting global scopes.	❌	7.9 years	7.8 years
#745	[css-layout-api] Lifetime policy for passed in objects, e.g. LayoutChild	❌	7.9 years	7.8 years
#746	[css-layout-api] Lifetime for instance of layout class.	❌	7.9 years	7.8 years
#769	[css-layout-api] Add Diagrams to visualize terminology	❌	7.9 years	7.8 years
#555	[css-properties-values-api] Observer for property being applied?	❌	7.9 years	7.8 years
#659	[css-typed-om-1] What does computedStyleMap() do on elements that are in documents with no browsing context?	❌	7.9 years	7.8 years
#716	[typed-om] Trim CSSResourceValue and subclasses to opaque objects for this level, punt rest to level 2	❌	7.9 years	7.8 years
#733	[css-typed-om] Add a note about partial implementations?	❌	7.9 years	7.8 years
#870	[css-animationworklet] Consider reworking 'Interaction with Animator Instances' section	❌	6.9 years	6.9 years
#903	[css-animationworklet] Use prefer-reduced-motion in some examples	❌	6.9 years	6.9 years
#960	[css-layout-api] const childFragments redefined in example 10	❌	6.6 years	6.6 years
#872	[css-typed-om] use-case: data/audio visualization	❌	6.6 years	6.5 years
#877	[css-paint-api] Cycle possible using inputProperties()	❌	6.6 years	6.5 years
#819	[css-paint-api] HTML spec switches on CanvasImageSource	❌	6.6 years	6.5 years
#844	[css-layout-api] Unregistered layout function and blockification.	❌	6.6 years	6.5 years
#898	[css-layout-api] Design to allow for more layout engine optimizations.	❌	6.6 years	6.5 years
#1072	create a sum value missing CSSMathClamp	❌	4 years	3.9 years
#1080	Dependency Cycles via Relative Units with unit algebra	❌	3.5 years	3.4 years
#1092	[css-typed-om] do types have hints?	❌	3.1 years	3 years
#1120	[css-properties-values-api] `initial-value` for `*` with arbitrary substitution values	❌	2.3 years	2.2 years
#999	[css-layout-api] Broken link to worklets' explainer	❌	2.2 years	2.1 years
#1089	[css-typed-om] Make CSSUnitValue use unrestricted double	❌	1.8 years	1.8 years