When WBAS went to the requirement that the long gun be “cycled” at the end of the string (enough to cock the hammer), there was no penalty for a fired case or hull left in the chamber. That meant the shooter was not penalized for a failure to extract, or in the event an extracted case or hull fell back into the chamber.
I’m hoping that this change was not intentional but was the result of cutting and pasting between Handbooks in an effort to make the games more consistent.
I got used to the philosophy of getting rid of unnecessary penalties. That said, I do my best to understand, apply, and play by the rules as they change from time to time.