Yeah I clicked the links to check, and here is what I got

Rose was right. She screenshot the marked posters and everything

HOWEVER, I wasn’t going to trust this. So I did some digging back in my own archives.

look at this shit. Back in part 12 (god that was so long ago). The posters are not marked up.

But then I thought, well this was in John’s house seeing it as John, so maybe the poster markings could only be seen through the computer.

So I checked when Rose first posted those pictures in her tutorial

This is proof. Something altered Rose’s perception of the timeline so that to her, and probably everyone else in the world, those posters were always marked. And John remains unaffected.

Shit like this terrifies me, there better be a good reason for this