It looks like the example project is linked to an older version of the extension. When you create your own version you use the most recent version of the extension. You can force the linked project to update by clicking “Edit Code” then:
- In the left hand panel below the simulated micro:bit there’s an “Explorer” button with a down error (to reveal details). Click the down error.
- On the line with the
gamePadextension there’s the version number (01154557 originally) that’s a reload button. Click the button to update to the newest version.
You may want to notify the source of the link that they should: update the project, “Share” it, and then use the link to the updated/shared project rather than this one.