I've been experiencing an issue with PieFed and the cross post preview when posting. I can put literally anything into the url bar, and I always get the preview showing that there are 25 crossposts. This even happens when there are actual posts of a link, it still just displays 25 and doesn't actually show any crossposts.
Here are some screens:
As you can see, it claims that test1234 has been posted 25 times, with hundreds of comments in each "crosspost".
Could be a problem with your instance, or does this happen on other PieFed instances?