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[release-1.28] Add configurable HBONE window sizing using feature flags (env vars)

Status: Open.

#59978 In istio/istio;

· istio-testing opened on Apr 23, 2026

Gateway API Inference Extension conformance report for Istio 1.30

area/networking

Status: Open.

Task

#59977 In istio/istio;

· ericdbishop opened on Apr 23, 2026

istioctl uninstall --revision does not delete leases

Status: Open.

#59968 In istio/istio;

· rittneje opened on Apr 22, 2026

There is no seemingly no Istio version upgrade migration path for GatewayAPI Gateways without breaking traffic for up to 30 seconds

area/upgradeIssues related to upgradesIssues related to upgrades

Status: Open.

#59959 In istio/istio;

· jbilliau-rcd opened on Apr 21, 2026

how to - rewrite headers from envoyExtAuthzHttp

Status: Open.

#59950 In istio/istio;

· anairatgithub opened on Apr 21, 2026

Istio 1.29.2 not working with Gateway API 1.4.1 and TLSRoutes

Status: Open.

#59949 In istio/istio;

· hugoboos opened on Apr 21, 2026

aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host api.xx.xxxxx.com:443 ssl:default [Connection reset by peer]

area/ambientIssues related to ambient meshIssues related to ambient mesh

area/networking

Status: Open.

#59946 In istio/istio;

· siva-spotdraft opened on Apr 21, 2026

Gateway API HTTPRoute Invalid headers not reflected in status

area/networking

area/user experience

Status: Open.

#59933 In istio/istio;

· miles-w-3 opened on Apr 20, 2026

pilot-agent does not reflect certificate changes after second rotation for file-mounted secrets used in DestinationRule

area/security

Status: Open.

#59912 In istio/istio;

· calikonur opened on Apr 17, 2026

WASM Image Pull Timeout Causes Stale ECDS Version Issue

Status: Open.

#59911 In istio/istio;

· Erica177 opened on Apr 17, 2026

Istio/Istio-Proxy got panic due to api/token calls failures on AWS

kind/enhancement

Status: Open.

#59899 In istio/istio;

· shaoxt opened on Apr 16, 2026

Excessive buffering / insufficient backpressure when clients have low bandwidth

area/ambientIssues related to ambient meshIssues related to ambient mesh

area/networking

area/perf and scalability

Status: Open.

#59887 In istio/istio;

· goosmurf opened on Apr 16, 2026