goto definition doesn't work for symbols in extraLibs with scheme+hostname in url

monaco-editor version: 0.13.1
Browser: Chrome
OS: win10

i'm adding external libs like this:

libs.forEach((lib, i: number) => {
    monaco.languages.typescript.javascriptDefaults.addExtraLib(lib.text, lib.url);
    monaco.editor.createModel(lib.text, "typescript", monaco.Uri.parse(lib.url));
});

however, if the libs' urls are absolute urls (http://...) , then, for symbols defined in those libs (eg keyCode, below):

• the hover tool works fine (it shows the type & comment defined in the extraLib):
  

• goto-definition doesn't work (does nothing),

• peek definition shows the peek popup, with the correct extraLib filename & path, but the contents are the file that was right-clicked on:
  

Start by reproducing the report in Chrome with monaco.languages.typescript.javascriptDefaults.addExtraLib and monaco.editor.createModel using an absolute http URL. Trace how these entry points resolve the extraLib URI for goto-definition and peek definition. Done means goto-definition opens the correct extraLib location and peek definition displays its contents.