SFC Playground displays errors when dev tools is enabled

[robokozo]

Version

6.4.2

Browser and OS info

Chrome 106.0.5249.62 / Windows 10

Steps to reproduce

Open browser (tested with chrome and firefox) to https://sfc.vuejs.org/
Add a line of valid code. e.g. const test = ref();

What is expected?

No error to appear

What is actually happening?

SFC playground displays an error reading:
"Cannot read properties of null (reading 'nextSibling')

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Refreshing seems to fix it.
Changing versions seems to fix it.
This has started happening over the last few days

I first opened the ticket on vuejs/core: vuejs/core#6779

[Akryum]

See vuejs/core#6812