WeBWorK v. 2.17 shows in one of our courses the message "Your overall recorded score is 0%" for incorrect answers even though a better score was received and recorded before and that better overall score is kept as recorded as it should be, so the message is not true, but it is confusing.
It seems to do it for all problems in that course, it does not matter if library or newly written trivial problem.
Other courses do display the correct overall recorded score for all problems, including the ones I copy over from the course that does not behave correctly.
If I use the course as template for a new course, that new course also displays the incorrect message.
The course configurations are the same, I don't see what might be causing this behavior.