Touch events not working on 1st gen iPad with iOS 5

Does anyone know of a problem with touch events not working on a 1st gen iPad running iOS 5? There are no problems with iOS 6 or iOS 7. When running my Cocos2d-x game on the 1st gen iPad nothing touch related fires.

It is strange.
But it is a pity that we don’t have the environment to reproduce the issue.
1st gen iPad running iOS 5 is hard to find.