My custom theme doesn´t affect vscode preview presentation

[rossii123]

I have followed the instruction on how to add a custom theme in the readme file. But the css changes I write on my your-theme.css does not affect vscodes preview presentation. But my theme will appear if I export my .md file to pdf.
My vscode version is:
Version: 1.40.0
Electron: 6.1.2
Chrome: 76.0.3809.146
Node.js: 12.4.

[yhatt]

Are there any error outputs in VS Code developer console (Ctrl/Cmd+Shift+I)?

[rossii123]

I made it work on vscode version 1.39 but when we updated to 1.40 it stop working. We have tried on two computers. The console output was:

[Extension Host] Fetching theme CSS: /cool.css
console.ts:137 [Extension Host] Error: ENOENT: no such file or directory, open '/cool.css'

I disabled all my pluggins expect the marp extension when testing this.

[yhatt]

Thanks to provide useful infos. The path resolution might be broken since 1.40. (It seems to resolve the relative path from /)

[rossii123]

Nice! Then I will use the absolute path to the css file for now. The marp extension is awesome!

[yhatt]

We had used a messy hack for resolution logic so could not resolve this at the moment. I've sent feedback to VS Code (microsoft/vscode#84846).

[yhatt]

I've applied workaround in #103. It will be fixed in next patched version.

[yumoraby]

Has this issue been fixed, as whenever i update the CSS, i need to restart VSCode to see the changes. However changing inbuilt themes have no issues.