I don't know if someone already reported this, but my search returned no results.
A friend of mine reported this bug to me, and I realised I had it to. Here's how to replicate it:
- View * menu > *Layout *> *Columns: 2
- Select the vertical separator in the middle, and expand one of the columns all the way to the edge of the screen (thus totally shrinking the other column)
- Sublime Text 2 stops working
This bug was found in Windows 7, version 2.0.1, build 2217.