Extrude blocks inward

Describe your computer specs and game version [Ex: Windows, v0.5.0]

Windows

Describe the issue

You can extrude blocks smoothly forward, but extruding in the opposite direction only works one block at a time.

Video: Dropbox

Steps to reproduce

  1. Go to Blokoto.com/create/games.
  2. Join any project.
  3. Put some blocks in a row.
  4. Select block face in front
  5. Drag and push the face inward.