I registered for an OfficeWorks account recently. A risky move for an online Australian store, but I like to live on the wild side.
After entering my 64 characters of pseudo-random gibberish, I got this:
Correct the following before you can continue You cannot use the same character 4 or more times.
Sailor Moon were able to for four seasons, and heaven knows how many times Shonen Jump characters have been reused.
Still, it seems like a pretty arbitrary and silly restriction, especially when it will hash to the same size. If you have a very short password, or one that just utilises a single character, this would make sense. Otherwise, it doesn’t.