Appium is unable to tap on an element in UI in iOS

Hi All,

We are facing an issue with element tap on a button. This is happening intermittently across multiple pages. Because of this our scripts are failing. Even in case of tap failure, from the logs we could see that the button click has occurred (au.getElement(‘53’).tap()). But nothing reflects on the UI. Please help since this has become a blocker in our test script execution.
Execution details:
Appium server - version 1.4.0 executed from command line using node.
Simulator version - iOS 8.1/8.2
Xcode version - 6.1