Ikea Dirigera not showing new devices (Myggspray Sensor)

Configuration Matter/Thread
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I am experimenting with the ikea Dirigera as a matter bridge coupled to HA which shows some Tradfri devices and sensors. Starting with the new motion sensors based on Matter (Myggspray) everything works fine during the pairing with the Home Smart app but no new devices show up in HA. I can see the sensor perfectly fine but i would expect the new device ro be shared by the existing paired bridge. even re-adding the bridge does not show the new sensor

Any experiences how to solve this?

HAOS 16.3
Home Assistant 2025.12.3
Matter Server 8.1.1

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I am not sure a Matter device is shared by default if the Matter hub is shared.
You might need to share each device specifically.

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As Wally indicates, the bridge is to expose Zigbee devices to Matter.

Matter devices don’t need a bridge and, currently, the way to share Matter devices to other platforms is going to the settings of the device in IKEA app and use the “Connect via QR code” option.

That has the advantage of the device connecting at the same time to both platforms so, assuming you have more Thread border routers, if the DIRIGERA goes offline it won’t affect Matter devices connected to HA. Your bridged devices however all will go offline if something happens to DIRIGERA.