I can’t repo that in playground, it’s my project, which just stuck in the scene if you do not hover or click other part of the html.
And I find the playground just scroll without reach the limit too
What I do in the page, replace the html with
<iframe src="https://playground.babylonjs.com/#A584HZ#23
" height="400" width="800" title="Iframe Example"></iframe>
Using scrolling = “no” in Iframe
Playground: Camera movement | Babylon.js Playground (babylonjs.com)
With camera.attachControl(canvas, false);
Playground: Camera movement | Babylon.js Playground (babylonjs.com)