I noticed similar behaviour yesterday when I completed 2 kyu kata (having 3 kyu) - the honor increased only by 1 when I expected 10. The honor increased appropriately with the next completed kata.

Thanks for the modification. I marked this kata as "ready". As I didn't label my original question as an issue, I believe there's nothing to resolve (at least I don't see the possibility in the reply).

Sorry for nitpicking, but... The kata's name is "get nth node", not the node value. I suggest to modify the kata details instead of the test cases (ie. to describe that you expect to find the ntn node and let the test cases verify the function returns the node). The test case modification you made just invalidated some good solutions that had been already submitted.
Anyway, it's your kata and the discrepancy between the details and test cases is resolved. If I need to resolve it somehow (ie. to click somewhere), please tell me. This was my first comment here on codewars and I don't know the good customs yet.

The descriptions says "...and returns the data value stored in the node...", while the unit tests expect the node to be returned (in JavaScript kata).