New Tab opens in quirks mode #1180
Description
Describe the bug
The WebContainer doesn't contain <!DOCTYPE html>, which causes Firefox to open it in quirks mode if you select "Open in New Tab". Quirks mode entirely breaks the WebContainer. This does not affect iframes.
Link to the blitz that caused the error
https://stackblitz.com/github/readf0x/startpage
Steps to reproduce
Click on "Open in New Tab"
See blank white page
Expected behavior
The WebContainer should function in a new tab.
Parity with Local
- I have run the project in my local machine and I could not reproduce the issue.
Screenshots
Platform
Browser name = Firefox
Full version = 111.0
Major version = 111
navigator.appName = Netscape
navigator.userAgent = Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0
performance.memory = undefined
Hash = 7259293c
Additional context
No response