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Coordinator (Gateway example) stops accepting new joins after 17 devices, 18th+ fails with Failed to join network with status (0x03) — increasing max_children to 40 has no effect

Bug

v2.0

Status: Open.

#902 In espressif/esp-zigbee-sdk;

· kartikvd24 opened on Aug 26, 2026

Manufacturer-specific string attribute delivered empty to ESP_ZB_CORE_REPORT_ATTR_CB_ID, and no supported way to reach the raw frame (Xiaomi/Aqara Basic 0xFF01)

Status: Open.

#901 In espressif/esp-zigbee-sdk;

· charris717 opened on Aug 26, 2026

Spinel UART interface fails to enable when the host console is not a UART (/dev/uart is never registered)

Status: Open.

#900 In espressif/esp-zigbee-sdk;

· charris717 opened on Aug 26, 2026

ZB_INIT_UINT24 is undefined (macro)

Bug

v1.0

Status: Open.

#899 In espressif/esp-zigbee-sdk;

· nboullis opened on Aug 25, 2026

Zigbee Coordinator loses ZED child entry in neighbor table after reboot while network state is restored

Question

Status: Open.

#898 In espressif/esp-zigbee-sdk;

· wurei opened on Aug 25, 2026

How to deal with HA device types marked as "unsupported"?

Question

Status: Open.

#897 In espressif/esp-zigbee-sdk;

· finalyards opened on Aug 22, 2026

Coordinator stops receiving permanently: inbound buffer requests refused with 20–50 buffers free, refusal counter pinned at ZB_NWK_IN_Q_SIZE = pool/2 (esp-zboss-lib 1.6.4 / esp-zigbee-lib 1.6.8)

Bug

Status: Open.

#896 In espressif/esp-zigbee-sdk;

· nerdshed opened on Aug 20, 2026

OTA Upgrade Desynchronization

Bug

v2.0

Status: Open.

#895 In espressif/esp-zigbee-sdk;

· Psyjonas opened on Aug 18, 2026

end device rejoin request

Question

v2.0

Status: Open.

#894 In espressif/esp-zigbee-sdk;

· zigporter opened on Aug 18, 2026

TC link key Confirm Key delivery depends on device poll rate — regression vs 1.6.8 with identical hardware/sensor

Bug

v2.0

Status: Open.

#893 In espressif/esp-zigbee-sdk;

· renatomotorline opened on Aug 18, 2026

[Bug] ZCL OTA client silently drops one Image Block mid-transfer and still advances to CHECK, yielding a short/offset-shifted image (esp-zigbee-lib 1.6.8 / esp-zboss-lib 1.6.4, ESP32-C6)

Bug

v1.0

Status: Open.

#892 In espressif/esp-zigbee-sdk;

· cultivioio-web opened on Aug 17, 2026

NWK Rejoin does not scan all secondary channels after several unsuccessful retries.

Bug

v2.0

Status: Open.

#891 In espressif/esp-zigbee-sdk;

· Psyjonas opened on Aug 16, 2026