Bizarre Monster Book Error

(Note: I might edit this post in the morning if anything changed by then).

I think they went into my book recently (not sure how though :f6, because most of my cards are back to normal now for some reason. I haven't been on in about 5 days, and haven't collected any new cards since it first glitched on me (which was also a one time occurrence for me since I got the two cards in one setting before logging out and haven't gotten any since) so I'm not entirely sure if they are actually doing something to fix them or what :f6:.

When I say almost back to normal, the only thing mixed up is the 1, 3, and 4 card amounts between my snowman, alishar, and king slime cards. Snowman had 1, now 3; King Slime had 4, now 1; and Alishar had 3, now 4. But other than this, it is a heck of a lot less messed up that it was before. It seems like they were just one slot away from fixing it properly... assuming they did something and it wasn't just a random thing for me...

Anyone else happen to notice something happen to their book without collecting anything recently?