See e.g. https://piefed.social/communities?search=forward - there are 2 communities listed there, both go to the same place if you click them, and that place has no posts from the last 3 days.
It almost looks like the existence of the second version of that community - changed mere seconds ago at the time of my writing this, except again, when you click the link it doesn’t show anything new for several days - is soaking up all the new posts, but since it is inaccessible by the normal means those new entities cannot be accessed.
This is my favorite spot in the Fediverse, so I hope it is addressed soon! That community in particular is doing great work to make the Fediverse fun & welcoming to come to by all us nerds:-).
I’ve merged the communities now, by moving all the posts from the new copy into the old one and then deleting the new one.
This bug used to occur several months ago because of some mixing of with upper and lower case AP IDs but it hasn’t been a problem until just now.
That’s wonderful! Now it should properly fill up my Chilling feed once more:-).
And too with each such issue fixed PieFed will become ever more stable, which is far more wonderful. 😊