It seems the "full partial grader" in WeBWorK is not working. This
grader is supposed to allow a student to get full credit if they get the last answer
correct, without having to enter any previous answers. However, this is not happening, and the standard grader is being used instead.
An example of this is in the NPL:
We updated webwork at the beginning of the summer so we probably do not have the latest version of PGgraders.pl