Bizarre Monster Book Error

I've been thinking about it and I think I've figured out (to a point) what's causing the shuffle. Some people are unaffected and that's what's brought me to this conclusion.

I believe that the new cards (all of them) are conflicting with a single old card (pre v.72) that all of the people affected by the shuffle have collected. So if your book has registered a single copy of [erroneous card, not yet determined] and then any of the new cards are collected, the next time you log in the erroneous card conflicts with the new card, and therefore sets off a reaction that causes cards to be placed at random until a new card is collected, and the process begins again.

If you're right about this, I think it has to be one of the PQ boss cards. It seems like everyone that has complained has complained about their PQ boss cards because of the leaf thing with Tienk.