During the March 10 update, we changed mass processing so you will produce the maximum amount possible even if you don't have all the materials needed to succeed in mass processing a certain amount. However, we discovered an issue where mass processing the remaining amount of materials, you would still successfully obtain one whole product. As a result, we performed an emergency partial maintenance to revert this change. Please note that we will examine the logs for any cases where more processed products were obtained than materials used and retrieve them. Although our goal was to provide a quality-of-life change as soon as possible, we instead created an issue. We apologize to our Adventurers, and we will work harder to provide this update in the future ina better state.
E.g.) You normally need Maple Timber x5 to obtain Maple Plank x1, but the issue was that when you mass produced with less than five Maple Timber, you would still obtain one Maple Plank.