Cannot read properties of undefined (reading 'getRootNode')

Hi there 👋🏻 ,

I hope it is the right place to ask, and I apologize if not. I’m currently trying to bump version of happy-dom from 2.51.0 to a greater one using vitest & vue 3 but I’m facing the following error:

happy-dom version: 3.1.0 (I’ve tried multiple version between this one and 2.51.0)
vitest version: 0.10.0

It seems to be related to usage of @headlessui/vue (version 1.5.0) but I haven’t found yet the root cause.

Thanks in advance for your help, wish you a nice day ☀️

[nilscox]

Here is a codesandbox with the minimal possible code to produce this error. Indeed, it only happens when running a second test (when adding a .only to the second test, it does not happen).

[brapifra]

I can confirm this is related to happy-dom. I changed the vitest environment to jsdom, and all tests passed. In my case, it also happens when running a second test.