The Binding of Isaac Afterbirth 1001% achievement unlocked

As you know, new patch was released few hours ago and I tried again to get 1001% achievement, which was totally broken before. The first thing I tried is picking up any item, hoping it will triggers the achievement. But no, nothing happened as usual. The second thing I tried is to revert back to my old save file which has all items identified except for one item(toxic shock) and pick up the missing item, freshly filling up the item collection grid. Then, just like in the vid, the achievement finally popped up. So, it seems to me that the game checks the eligibility for 1001% achievement only when players pick up the new item that is not yet identified in the item collection grid. Therefore, players who already identified every single item in the collection grid couldn't get the achievement until the devs fix it, unfortunately. Hope they will fix this soon. ps. 1001% achievement unlocking problem was finally fixed in 2015.12.06. patch.