Repository Issue Activity (beta)

#4138 Layout invalidation could read AngleSharp's Document.MutationVersion instead of hand-maintained scopes

#4129 Binding a bound function flattens the whole "bound bound … f" name, so a chain of N binds costs O(N²) time and memory

#4094 Unbounded memory growth from repeated Engine.Evaluate()/Execute(string) calls with fresh scripts (regression between 4.11.0 and 4.12.0)

#4117 Tagged templates grow a long-lived engine without bound: Realm._templateMap is an unbounded strong dictionary keyed on the AST

#3575 Headless browser and DevTools protocol: a campaign plan

#4098 Implement the standardized ProcessingInstruction constructor, attributes and HTML parsing

#4107 Preserve processing-instruction data in deep clones and imports

#4113 Preserve processing instruction data in Range.cloneContents

#4102 Publish the initial serve target before announcing readiness

#4109 Escape angle brackets in serialized attribute values

#4108 Keep shallow template clones empty of template contents

#3771 Complete optional frame initialization, navigation and realm-specific services

#3947 Browser WPT synchronous documents can hit harness timeout under test-suite load

#4092 Preserve browser WPT census harness failures across duplicate observations

#3946 Browser: the two Selectors-API groups with no public AngleSharp seam — empty namespace and ::slotted

#4093 Browser: selector namespace validation loses prefixes across comments and hex escapes

#4103 Browser: invalid type branches reject whole forgiving :is and :where lists

#4101 Preserve parsed XML namespaces when cloning after xmlns declaration edits

#4099 Browser: explicit null-namespace elements inherit ancestor xmlns declarations

#3971 Preserve creation realm for native nodes adopted before binding observation

#3950 Browser: createDocumentType cannot build a usable doctype node (the element half is done)

#3772 Five smaller DOM defects the browser lane's new suites found: hasFeature, collections, XML names, CharacterData offsets, and three constructors

#4013 Performance investigation backlog: what the browser and DevTools campaign measured but did not fix

#3882 Scalar OpenAPI UI operations do not render because geometry queries exhaust the page task budget

#3930 Complete X4 controlled browser comparison and gate-quality evidence