images in _draft post asset folder can't be accessed using markdown

looking at https://hexo.io/docs/asset-folders.html section "Embedding an image using markdown". When I use the markdown syntax for a post in my _posts folder it works fine, but when I try to do the same in _drafts it doesn't work. It looks like the referenced image doesn't get any prepended root "localhost:4000/trail-and-sunset.jpg" and it throws an error "Cannot GET".

Is there a way to enable using prepend root and post asset folder for posts in my _draft folder?

My _config:
post_asset_folder: true
marked:
gfm: true
prependRoot: true
postAsset: true

Start with the “Embedding an image using markdown” section of the linked asset-folders documentation and reproduce the behavior using the shown _config in a post under _drafts. Compare it with the working _posts case and the “Cannot GET” result; done means the draft post’s markdown image resolves with the prepended root and post asset folder.

Written by the indexing model from the issue text.