I also found this new limitation in the 64bit version.
So I have implemented the new message is received trigger but this introduces new problems in that I now have to have a 3rd party application open in the background to actually understand when my NFC tag is presented and also now every time a tag is read it opens a new browser tab so you can end up with literally hundreds of tabs open in the background.
Am I doing something wrong here or is this the way its supposed to work?
Really bad news that 64bit does not work properly with NFC readers. I hope this issue is fixed quickly as the message received mode seems to have some drawbacks for me at least.