I have just got a ZBT-2, but am having problems with it on my HA Yellow. The ZBT-2 disappears on reboot of my HA Yellow (system, not restarting HA).
When I first plug (re-plug) it in, the ZBT-2 is discovered by the OTBR app on /dev/serial/by-id/usb-Nabu_Casa_ZBT-2_E072A1FA2C10-if00. On reboot, the OTBR app fails to start, and the only device that sort-of matches the ZBT-2 is /dev/serial/by-id/usb-Espressif_USB_JTAG_serial_debug_unit_E0:72:A1:FA:2C:10-if00.
A side-effect of this is that any Matter devices that were paired disappear after I unplug/re-plug the ZBT-2 in.
As for peripherals, I do have the ZWA-2 connected via PoE and an Insteon PLM using the second USB-A port /dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A10OQGDG-if00-port0.
Versions:
Core: 2026.8.1
Supervisor: 2026.07.05
OS: 18.2
OpenThread Border Router: 3.1.0