We’ve encountered a strange bug whereby the “Touch” blueprint event is not working, but only on the iPad Air.
We have a player controller set up with a touch event which is designed as a “tap to move” - the input registers in mobile preview - both on our PC and Macbook, as well as on our iPad 2 and my Nexus 5.
I’ve set up a print right off the “pressed” node of the Touch for testing.