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Crash on iOS when encoding/decoding nullable nested data classes

Status: Open.

#3089 In Kotlin/kotlinx.serialization;

· Merkost opened on Oct 13, 2025

Inconsistencies with nullability design

Status: Open.

#3087 In Kotlin/kotlinx.serialization;

· BenWoodworth opened on Oct 3, 2025

Discussion: Non-intrusive serialization declaration - Reducing annotation pollution in KMP/JVM ecosystems

feature

Status: Open.

#3086 In Kotlin/kotlinx.serialization;

· zjarlin opened on Sep 30, 2025

Request for decodeFromDynamic for WasmJs

feature

Status: Open.

#3085 In Kotlin/kotlinx.serialization;

· ApoloApps opened on Sep 21, 2025

Proposal: Deprecate for removal the ‘External serializers’ feature with the aim of being replaced by the new 'Serializers DSL'

External generated serializerEverything related to external auto-generated serializer (@Serializer annotation) Everything related to external auto-generated serializer (@Serializer annotation)

Status: Open.

#3084 In Kotlin/kotlinx.serialization;

· sandwwraith opened on Sep 19, 2025

Decode element method always called for optional element when decodeSequentially is used

question

Status: Open.

#3080 In Kotlin/kotlinx.serialization;

· rnett opened on Sep 15, 2025

Deserialization Error Caused by Generic Sealed Interface

bug

Status: Open.

#3073 In Kotlin/kotlinx.serialization;

· CyanTachyon opened on Sep 6, 2025

Value classes that implemnet sealed interfaces marked as @Serializable cannot be decoded and will throw runtime error.

Status: Open.

#3072 In Kotlin/kotlinx.serialization;

· TBSten opened on Aug 30, 2025

Optimize read-only collections

feature

Status: Open.

#3070 In Kotlin/kotlinx.serialization;

· dovchinnikov opened on Aug 26, 2025

ANR/Deadlock during Json initialization with a custom serializer

Status: Open.

#3069 In Kotlin/kotlinx.serialization;

· VEZE opened on Aug 22, 2025

Make default values available from descriptors

feature

Status: Open.

#3066 In Kotlin/kotlinx.serialization;

· rnett opened on Aug 18, 2025

Add more flexibility to BinaryFormat.encodeToByteArray

feature

Status: Open.

#3065 In Kotlin/kotlinx.serialization;

· jfontsaballs opened on Aug 17, 2025