Vue 3 example doesn't work: _a2.getBoundingClientRect is not a function

[lakeeast]

Describe the bug When creating the simplest example based on official documentation with Vue 3, the UI will not render. The following error will show up:

To Reproduce Steps to reproduce the behavior:

1. npm create vite@latest
2. Select Vue 3 with typescript
3. Copy paste sample code in https://github.com/Leecason/element-tiptap
4. See error

Expected behavior It should render the text (but nothing showed up)

Screenshots See attached

Desktop (please complete the following information):

• OS: Mac Pro
• Browser Chrome
• Version: latest

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.