Non vscode related directory resources do not support loading?

[AShujiao]

Supports extensions directory：
file:///C:/Users/Administrator/.vscode/extensions/333.jpg

Non extensions directories are not supported：
file:///d:/soft/vscode-img/2077/IMG_3331(20201223-161406).jpg

The related extension does not work properly：
https://marketplace.visualstudio.com/items?itemName=manasxx.background-cover
https://marketplace.visualstudio.com/items?itemName=shalldie.background

[aeschli]

Please file the request against the background extension.