vscode: Markdown preview no longer shows images with path relative to project root

I’m noticing the same behavior as in #84728: Images using the syntax ![](/assets/2019-10-24_07_56_26.png) (where assets is a folder at the root of the project) are not displaying in Markdown preview. I tried downgrading to 1.41.1 and did not see the issue. I do see the issue on 1.47.2 and insiders. I see the issue on both my macOS and Ubuntu machines.

• VSCode Version: 1.47.2
• OS Version: Ubuntu 20.04, macOS Catalina

Steps to Reproduce:

1. Exact same steps as in #84728

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