Steps to reproduce:

1. Run BrowserSim
2. Select iPhone 5 skin if it is not selected
3. Click Context Menu > Open Synchronized Window > Galaxy S III
4. Open BrowserSim Preferences window and remove the first skin (Desktop) from the list
5. Click OK in the Preferences window

Actual behavior:
iPhone 5 skin is changed to selected in preferences during deletion, Galaxy S III is changed to Samsung Galaxy Tab

Expected behavior:
first skin is changed to selected in preferences during deletion and Galaxy S III skinstays as it is