I have an application which works fine on Xcode6-Beta1 and Xcode6-Beta2 with both iOS7 and iOS8. But with Xcode6-Beta3, Beta4, Beta5 I\'m facing network issues with iOS8 but
For mine, Resetting content and settings of Simulator works. To reset the simulator follow the steps:
Resetting content and settings
iOS Simulator -> Reset Content and Settings -> Press Reset (on the warning which will come)