Open Preview on markdown files are not working

[tujeff]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version:
• OS Version:

Steps to Reproduce:

[tujeff]

Does this issue occur when all extensions are disabled?: Yes

VS Code Version: openvscode docker 1.63.0
OS Version: Debian bullseye
Steps to Reproduce:

1. Create a simple md file
2. A blank screen shown when open preview

[jeanp413]

@tujeff I cannot reproduce, I tested in chrome and firefox, what browser are you using? do you see any relevant error in dev tools console?

[tujeff]

I'm using both Chrome and Safari to test, and have the same blank preview screen.

There are some errors in dev console:

[jeanp413]

@tujeff ah I see, the issue is you are accessing the workbench using http and not in localhost. As you can read in the console service workers (used by webviews in this case the markdown preview) won't work unless you use https or http://localhost (as they require a secure context https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts).
So to fix your issue I'd suggest you use https maybe by configuring a reverse proxy (#96 (comment))

I'll this close for now, thanks.

[tujeff]

Yes, https did it. Thank you very much!