I assume it suffers from the same issues as the other Markdown editors I've tried, particularly failure to soft wrap list items to the appropriate level of visual indentation.

You assume? Wrapping to the "proper" indent level is a highly subjective statement but line-wraps in Markdown in VS Code don't go back to the start of the line but to the level of indentation.

Am I wrong? To clarify, I'm not looking for a Markdown editor with a preview pane. I'd want to see proper soft wrapping in the editor pane itself.

Edit: I also want the line to to be indented past the number or bullet, e.g:

Right:

1. first line of text

   second line of text

Wrong:

1. first line of text

second line of text

The spec doesn't address line wrapping in editors: https://spec.commonmark.org/0.30/#indented-code-blocks

I imagine you could open a Github issue or even submit a PR if you don't like how a certain editor does word wrapping in Markdown lists. Personally I am not concerned with this detail.

You are correct, I was using proper in a highly subjective/opinionated way. It's just that I would prefer lists to be wrapped and indented the same way they would be in a rendered document, as I will only be reading these notes in my editor.