I don't have any problems. I just tried a tag I once programmed to goto my web site and it worked as soon as I tapped it on the phone. Another blank tag brought up the tag programmer app I have installed. I did tap the blank one once and it didn't notice it, but I shifted it a bit and it worked the 2nd time. This is all with my Seidio Dilex case on the phone as well.
I also copied a bunch of files off my Nexus 7 when first setting up the phone using the filebeam app and tapping the two together.