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Model source generator: NullReferenceException when a structure subtypes a structure from a dependency ModelDesign

Status: Open.

#4332 In OPCFoundation/UA-.NETStandard;

· romanett opened on Aug 28, 2026

Update docs to GitHub feed instead of ado feed

Status: Open.

#4330 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Aug 28, 2026

V2 managed Subscription.PublishingStopped flaps Stopped→Recovered on every publish gap — root cause in StartKeepAliveTimer (interval clamps to Timeout.InfiniteTimeSpan then to 1s)

Status: Open.

#4323 In OPCFoundation/UA-.NETStandard;

· ebrown14 opened on Aug 27, 2026

CreateInstanceOf<Type> factories never complete the node create lifecycle, so OnAfterCreate is skipped

bugA bug was identified and should be fixed.A bug was identified and should be fixed.

Status: Open.

#4320 In OPCFoundation/UA-.NETStandard;

· romanett opened on Aug 27, 2026

Variant.From cannot be called through dynamic: a null argument is ambiguous and a Variant argument hits the Enum constraint

Status: Open.

#4316 In OPCFoundation/UA-.NETStandard;

· romanett opened on Aug 26, 2026

AddSecurityConfiguration(ArrayOf<CertificateIdentifier>) loses the application certificate unless CertificateType is set

bugA bug was identified and should be fixed.A bug was identified and should be fixed.

Status: Open.

#4315 In OPCFoundation/UA-.NETStandard;

· romanett opened on Aug 26, 2026

The BaseDataVariableState class consumes too much memory

enhancementAPI or feature enhancementAPI or feature enhancement

Status: Open.

#4275 In OPCFoundation/UA-.NETStandard;

· kimdiego2098 opened on Aug 18, 2026

No Part 7 conformance facet exists for hardware key custody, so it cannot be certified or tested

complianceAn issue was found which is not compliant with the OPC UA specification.An issue was found which is not compliant with the OPC UA specification.

wontfix

Status: Open.

#4211 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Aug 9, 2026

HTTPS with a device-held private key does not work on Windows or macOS

certificatesRelated to certificatesRelated to certificates

enhancementAPI or feature enhancementAPI or feature enhancement

wontfix

Status: Open.

#4209 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Aug 9, 2026

Server: ISubscriptionManager re-declares 10 ISubscription operations as lookup-and-delegate wrappers

enhancementAPI or feature enhancementAPI or feature enhancement

server

Status: Open.

#4186 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Aug 5, 2026

Server: ISubscription publishes 11 members of internal publish-pipeline protocol on its public interface

enhancementAPI or feature enhancementAPI or feature enhancement

server

Status: Open.

#4185 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Aug 5, 2026

[Server] Decouple service-call dispatch from MasterNodeManager lifecycle coordination

enhancementAPI or feature enhancementAPI or feature enhancement

Status: Open.

#4098 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Jul 26, 2026