aporia-0.3.0 can't focus on edit on win7 64
When open 1+ files, switch between muti tabs, and  can't focus on edit, just show line number, codes is hide. Console and Errorlist alse has this problem.
![bug1](https://cloud.githubusercontent.com/assets/485018/7930361/3c23888e-093a-11e5-98f4-1940e8cc6ca1.png)
