Cannot tab to next placeholder in a snippet

When inserting a snippet, the cursor moves to the first placeholder which I can edit.  However, when I press tab it does not move to the next placeholder in the snippet :-(

OS: Linux (Ubuntu 12.04.1 LTS)

Sublime Text Version 2.0.1, Build 2217

Steps to reproduce:

1. Type the tabTrigger for a snippet with more than 1 placeholder
2. Type some characters for the 1st placeholder
3. Press tab
4. Cursor stays in 1st placeholder