Steps to Reproduce:
1) Using Safari on an iPad positioned vertically, visit the general use case for alloy:dialog in the Liferay Faces Showcase with an iPad /views/component.faces?componentPrefix=alloy&componentName=dialog&componentUseCase=general
2) Click on the button for Example 2
If the bug is fixed then touching outside the dialog will dismiss it. If the bug still exists, then touching outside the dialog will not dismiss it.