I was randomly doing some searching on the search bar on CF, and a very strange thing happened

Obviously, there should be results of "April fools" on CF. I have tested that, if I change to sort by popularity or time, it also does not show results. I also tried other things to search, and the only thing it shows is a person of the username I searched, such as follows:

I also reproduced it on my phone, so it should not be a problem on my end (unless it is that both my computer and my phone has a problem) Can MikeMirzayanov have a look on it?