If the user has a Devfile with multiple project sources declared:

schemaVersion: 2.1.0
metadata:
  name: dashboard-with-ws-client
projects:
  - git:
      remotes:
        origin: 'https://github.com/eclipse-che/che-dashboard.git'
    name: dashboard
  - git:
      remotes:
        origin: 'https://github.com/eclipse-che/che-workspace-client.git'
    name: ws-client 

VS Code opens the first project source only (which the PROJECT_SOURCE environment variable points to):

In order to see other projects one needs to add each project source by hand with the help of the Add Folder to Workspace... command:

To solve that problem, VS Code should open all the cloned projects as a multi-root workspace:

It would allow starting working on the projects immediately, without the need to configure a VS Code's workspace by hand.