Someone said the official tickets didn't have the hologram, so without it, copying a QR code would be as easy as photocopying it, so once used if attempted to be used again would be "fake" even if yours was actually the original.
I was only saying what was reported on TV, I've no idea if it's normal or not, but copying a QR code is easy with modern printing skills, so something is wrong there.
Our own season tickets are now mostly digital, (I know you can get paper replacements in some cases), and obviously they can be transferred, but you wouldn't be able to use it more than once, unlike a good paper copy of a QR code.
@Bluearmy pic earlier shows someone on facebook with a large wad of tickets in a plastic bag, so someone duplicated the QR codes easily.