Bluetooth on Linux/Chrome no longer connecting

Odd one - yesterday I had the IDE in Chrome connecting and uploading to my Bangle.js 2 fine flawlessly.

Today I can no longer connect - the device shows up in the popup and fails with "No Services matching UUID 6e400001-b5a3-f393-e0a9-e50e24dcca9e found in Device".

In bluetoothctl I can see this service is available:

Device C2:30:31:71:72:2D (random)

Name: Bangle.js 722d
Alias: Bangle.js 722d
Paired: yes
Trusted: yes
Blocked: no
Connected: yes
LegacyPairing: no
UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
UUID: Nordic UART Service       (6e400001-b5a3-f393-e0a9-e50e24dcca9e)

Connecting works fine from my Android phone. So seems like something has broken on my Linux system. Tried reboot, removing device from bluetoothctl and repairing, etc to no avail. Help!

Thanks

Set Slow Write = true
index.js:92942 BT> Starting device chooser
index.js:96347 Web Bluetooth is experimental on this platform. See https://github.com/WebBluetoothCG/web-bluetooth/blob/main/implementation-status.md
index.js:92942 >>> Connecting to Bangle.js 722d
index.js:92942 BT>  Device Name:       Bangle.js 722d
index.js:92942 BT>  Device ID:         cOsU4+2c2Y7438HF0xk5xA==
index.js:92942 >>> Connected to BLE
index.js:92942 BT> Connected
index.js:92942 BT> ERROR: NotFoundError: No Services matching UUID 6e400001-b5a3-f393-e0a9-e50e24dcca9e found in Device.
index.js:92942 BT> Disconnected (gattserverdisconnected)