I suspect that multiple puzzles have this problem, but I was able to verify it on the new Rugby Scores community puzzle. It (still right now) says that no one has solved it. Or more specifically, it doesn’t say anything about number of people who have solved it.
I have solved it just now, and when I did, I was able to see solutions from several other people written in C#. Some of the other recent community puzzles look suspiciously low as well.