"Unable to establish connection with the sandpack bundler" if inactive in the "Writing Markup with JSX" page.

In the page https://react.dev/learn/writing-markup-with-jsx , the first and last code editor blocks work fine, but if the original code is left unedited for about 40 seconds an "Unable to establish connection with the sandpack bundler" error is shown, and the only way to fix it is reloading the page or scrolling far away from the code editor and returning back to it.

This is how the page initially looks:

After about 40 seconds:

Note that if the code is edited in a way that there is no error, the issue doesn't occur.

I've noticed that this issue only occurs if there is an error in the code editor's code snippet but the mere existence of an error there doesn't guarantee the occurrence of the issue.

I've also noticed that using the same code snippet on other pages with code editors produces the same issue but only if I scroll away from the code editor and return back to it, so that the output of the code editor is loaded from scratch with said code snippet.

This issue occurs for me on both Edge and Chrome on windows, it also occurs on chrome for android (both in normal and incognito mode).

首先，使用第一个或最后一个代码编辑器块，在 Writing Markup with JSX 页面上重现该故障，并让原始错误代码保持不变约 40 秒。还要按照 issue 中的描述，测试从编辑器滚动离开后再返回编辑器时的行为。在这些已报告的场景中，编辑器不再显示 Sandpack bundler connection error，即表示完成。