List % is Bugged

My List % doesn’t work anymore. It should be around 70/80 % and suddendly went down to 38% for no reason.
Thank you for the help.

It looks like the list is adding from section 4, where there are some words that haven’t been added yet. Had you recently changed the study options for the list, possibly having it rescan from the beginning? I see other words added from sections beyond section 4, once the remaining words in section 4 are added, the list’s progress will jump to the next un-added word. The progress percentage for a list is based on where it’s at in it’s adding position, and currently doesn’t consider any words already counted as learned beyond that adding position.