Yes - there is such an inconvenience.
I solve it this way:
Take for example the project tests cocos2d-x with Airplay SDK (.. / tests / test.airplay / test.mkb)
- in TestController:: TestController () change
CCDirector:: sharedDirector () ~~> setDeviceOrientation ;
CCDirector:: sharedDirector~~> setDeviceOrientation (kCCDeviceOrientationPortrait);
(It should be done only for testing on the simulator airplay - for testing the device will need to return the value CCDeviceOrientationLandscapeLeft)
2.in airplay simulator set Configuration~~> Surface~~> Predefined Resolution = iPhone Landscape.
as a result in must to get something like this: