Scratch in macOS Sequoia 15.6 Safari will not stay connected to micro:bit

[martinwork]

Expected Behavior

The Scratch website stays connected to micro:bit.

Actual Behavior

The Scratch website in Safari on macOS Sequoia 15.6 disconnects from micro:bit after about 3 seconds.

It seems OK in Chrome and Edge, and in the Scratch 3 app.

Steps to Reproduce

Steps to reproduce the behavior:

1. Go to 'https://scratch.mit.edu'
2. Click on Create
3. Add the micro:bit extension
4. Connect to a micro:bit
5. Go to editor
6. Wait a few seconds
7. See lost connection

System Details

macOS Sequoia 15.6 Safari 18.6