PS Benefit: FSA worksheet pay period remaining is wrong

Hello,

For a pay group we have 24 pay period for a year, but after running OE in the test environment pay period remaining shows 25 on the FSA worksheet, which is wrong. I have checked all the event rules coverage begin and end date, which seems fine. Just wondering if you encounter similar issue before or do you have any resolution for this. version HR 9.2. Thanks