• VSCode Version: 1.15.0
• OS Version: Manjaro Linux x64 Gellivara

Steps to Reproduce:

1. Configure settings.json

{
  "workbench.editor.showTabs": false
}

2. Tabs are hidden but tabs section still fill the space.

Reproduces without extensions: Yes

Some captures:

1. Face to face with Vim

2. Proposed setting:

{
  "workbench.editor.showTabs": "none | one | all"
}

With "workbench.editor.showTabs": "none" then