I decided to check some Nicholas II banknotes after landing on one in a Google result when I was searching for a different type, so I went to his page and clicked on “See 94 banknotes” in hopes that it would give me a list of his banknotes.
Instead I got a result with a bunch of coins and no banknotes (apparently because my filters were set to “coins”).
I checked a few other rulers and the results were consistent: the “banknotes” link does not lead to banknotes if I had previously set my filters while looking for something else (which I basically have to in the new style to get any relevant results).
This is probably a bug, and consequently I'm reporting it as such.