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JetStream memory footprint grows with subject & dedup cardinailty despite storageType=File

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8485 In nats-io/nats-server;

· davidmcote opened on Aug 19, 2026

Leaf interest arriving over a route does not skip when isolate_leafnode_interest is true

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8481 In nats-io/nats-server;

· formzeke opened on Aug 19, 2026

Account JWT mapping updates that fail AddWeightedMappings are silently discarded, leaving stale or empty mappings

Status: Open.

#8468 In nats-io/nats-server;

· johnweldon opened on Aug 14, 2026

Misleading "maximum account active connections exceeded" on auth callout rejection

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8441 In nats-io/nats-server;

· ckasabula opened on Aug 3, 2026

Filestore reads an uncompressed block as a compressed block when the first record length is 0x706D63 ("cmp")

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8433 In nats-io/nats-server;

· soundsonacid opened on Jul 29, 2026

Snapshot install compacts the Raft log before the store data it covers is durable

Status: Open.

#8425 In nats-io/nats-server;

· miotte opened on Jul 27, 2026

CONSUMER.RESET response silently dropped across a service import (same-client no-echo check) — cross-account source/mirror bind-by-name hangs at active: -1

Status: Open.

#8411 In nats-io/nats-server;

· omer9564 opened on Jul 23, 2026

Allow verify_and_map to derive identity from any certificate attribute, not just email/SAN/DN

proposalEnhancement idea or proposalEnhancement idea or proposal

Status: Open.

#8393 In nats-io/nats-server;

· edjeffreys opened on Jul 17, 2026

jetstream sequence inconsistent with actual message order

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8368 In nats-io/nats-server;

· f7d1g opened on Jul 8, 2026

Hub IPs are leaking to leafnodes even if no_advertise is set to true

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8367 In nats-io/nats-server;

· formzeke opened on Jul 8, 2026

Flaky TestRegisterAndUnregister due to asynchronous ATS goroutine shutdown

defectSuspected defect such as a bug or regressionSuspected defect such as a bug or regression

Status: Open.

#8363 In nats-io/nats-server;

· zhengshi1998 opened on Jul 7, 2026

Allow stream, consumer & account names to contain arbitrary characters by encoding pathnames

proposalEnhancement idea or proposalEnhancement idea or proposal

Status: Open.

#8352 In nats-io/nats-server;

· matthewadams opened on Jul 3, 2026