Changelog for Minecraft 1.21.1

All notable changes to this project will be documented in this file.

1.21.1-2.11.5 - 2026-06-14 14:50:24

Changed

• Optimize IngredientMatcherFluidStack#isEmpty method

1.21.1-2.11.4 - 2026-03-14 16:43:54 +0100

Fixed

• Serialize recipe handled recipes by their id This significantly reduces packet sizes. Closes CyclopsMC/IntegratedCrafting#192

1.21.1-2.11.3 - 2025-12-21 16:25:29 +0100

Added

• Add translations through Crowdin (#44)

Fixed

• Fix bundle overfilling through item capability, Closes #45

1.21.1-2.11.2 - 2025-11-16 16:50:45 +0100

Changed

• Optimize SlotlessItemHandlerWrapper#getLimit Previously, this would iterate over all slots, which could get expensive for inventories with a large number of slots. Related to CyclopsMC/ColossalChests#192

1.21.1-2.11.1 - 2025-11-15 05:45:03 +0100

Fixed

• Fix wrong item serialization between size between 99 and 127 Closes CyclopsMC/IntegratedTerminals#186

1.21.1-2.11.0 - 2025-11-11 15:36:34 +0100

Added

• Add Recipe Handler to Visual Workbench Required for CyclopsMC/IntegratedCrafting#163

1.21.1-2.10.1 - 2025-10-17 15:16:06 +0200

Changed

• Optimize equals and hashCode of recipes Related to CyclopsMC/IntegratedCrafting#156

1.21.1-2.10.0 - 2025-10-07 07:44:32 +0200

Added

• Add SizedIngredient variant for getPrototypesFromIngredient (required for Integrated Mekanism)

Fixed

• Clear recipe handler caches on server stop
• Fix not all shapeless recipes not being exposed correctly

1.21.1-2.9.12 - 2025-08-15 08:42:31 +0200

Added

• Add translations through Crowdin (#42)
• Update PT_BR localization (#41)

Fixed

• Remove energy from NBT equality filter config This fixes ID energy batteries incorrectly stacking in Integrated Terminals. Closes CyclopsMC/IntegratedDynamics#1542

1.21.1-2.9.11 - 2025-05-31 19:23:33 +0200

Added

• Add getters in PrototypedIngredientAlternativesItemStackTag

1.21.1-2.9.10 - 2025-05-10 08:50:54 +0200

Fixed

• Fix recipe simulation for stonecutter recipes

1.21.1-2.9.9 - 2025-05-07 17:18:00 +0200

Fixed

• Fix extraction from non-zero tanks not working Closes CyclopsMC/IntegratedTunnels#335

1.21.1-2.9.8 - 2025-04-04 17:13:53 +0200

Added

• Add nl_nl translations

Fixed

• Fix wrong worker hasWork capability on brewing stand
• Fix recipes for <3x3 grids sometimes being invalid
• Fix bundle capability storing empty stacks
• Fix bundle item handler not supporting item removals
• Fix item entity capabilities not being added correctly

1.21.1-2.9.7 - 2024-12-10 15:45:16 +0100

Changed

• Improve performance of DataComparator, required for CyclopsMC/IntegratedTerminals#139

Fixed

• Fix Vanilla Furnace not accepting recipes with some empty inputs Closes CyclopsMC/IntegratedDynamics#1432

1.21.1-2.9.6 - 2024-11-10 14:09:31 +0100

Fixed

• Fix Integrated Dynamics batteries not being auto-craftable Closes CyclopsMC/IntegratedCrafting#113

1.21.1-2.9.5 - 2024-10-13 17:28:43 +0200

Fixed

• Fix mutation when serializing items with count > 99 This caused desync issues in mods such as Integrated Terminals. Closes CyclopsMC/IntegratedTerminals#126

1.21.1-2.9.4 - 2024-08-21 17:47:56 +0200

Fixed

• Fix incorrect RecipeDefinition#hashCode This fixes issues where some recipes could not be crafted. Closes CyclopsMC/IntegratedCrafting#110
• Refer to NeoForge's updateJSONURL instead of Forge's
• Correctly extract from slots with limit > 64 This fixes issues with Integrated Tunnels and Crafting when interacting with mods such as Sophisticated Barrels. Closes CyclopsMC/IntegratedCrafting#106

[1.21.1-2.9.3] - 2024-08-09 21:03:16 +0200

Added:

• Add missing serialization context when decoding ingredients This fixes a problem in Integrated Terminals where terminals break if they contain enchanted items. Closes CyclopsMC/IntegratedDynamics#1375

Fixed

• Fix capability getter failing with void context capabilities This fixes crashes with the Integrated Dynamics world item importer, Closes CyclopsMC/IntegratedDynamics#1376