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Forge 47.3 Minecraft 1.20.1


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Forge version: 47.3.0
Minecraft version: 1.20.1



This third recommended build for MC 1.20.1 offers improved performance, bugfixes, new features and various backports from newer versions such as 1.20.2, 1.20.4 and 1.20.6.

As a reminder, the release policy for recommended builds has changed - we now aim to release new recommended builds for fully supported MC versions more frequently - as long as there's a reasonable amount of changes since last recommended build. 


  • Add a CrashReportAnalyser that tries to identify the mod that crashed the game
    • This feature scans your crash report as it is being generated and lists suspected mods that could be the cause of the crash, accounting for coremodding as well.
    • This makes it easier to find the culprit as it is often listed clearly in the crash report itself (e.g. "Suspected mods: buggymod")
  • Improve mod loading error message for errors inside mod constructors (#9751)
    • No longer shows a vague error if the error happens inside a constructor - Forge now tells you the actual error
  • Optimise registries by using fastutils collections to minimize boxing. (#9749)
  • Datagen addOptionalTag/s methods that allow passing the TagKey itself instead of passing the location (#9807)
  • Optimise Forge's config system, backport of #9810 (#9824)
  • Make common DisplayTest registration tasks easier, backport of #9822 (#9823)
    • Before: 
      ModLoadingContext.get().registerExtensionPoint(IExtensionPoint.DisplayTest.class, () -> new IExtensionPoint.DisplayTest(() -> "ANY", (remote, isServer) -> true));
    • After: 
    • The old method still works for backwards-compatibility. The new method has also been backported to 1.19.4, 1.19.2 and 1.18.2.
  • Add support for running with Java 22 and 23 
  • Add ASMAPI.MethodType.DYNAMIC in JS CoreMods (CoreMods#44)
  • Add Leaves method to ModelProvider.java (#9889)
  • Make common config screen registration tasks easier, backport of #9884 (#9912)
    • Before: 
      ModLoadingContext.get().registerExtensionPoint(ConfigScreenHandler.ConfigScreenFactory.class, () -> new ConfigScreenHandler.ConfigScreenFactory((mc, modsScreen) -> new MyConfigScreen(modsScreen));
    • After: 
      MinecraftForge.registerConfigScreen(modsScreen -> new MyConfigScreen(modsScreen));
    • The old method still works for backwards-compatibility. The new method has also been backported to 1.19.4, 1.19.2 and 1.18.2.
  • Add CPU usage config option to early window, hide by default, backport of #9866 (#9915)
    • New cleaner look, slightly improved client mod loading performance
  • Add helper method to `OnDatapackSyncEvent`, backport of #9901 (#9919)
  • Optimise capabilities, backport of #9886 (#9911)


  • Fix misaligned patch in RegistryDataLoader
  • Fix tag loading being unordered. Closes #9774
  • Fix rare crash with early display window, fixes #9673 (#9798)
  • Don't turn off VSync when rendering from Minecraft context (#9800)
  • Fix KeyModifiers not being properly taken into account. Closes #9806
  • Rework KeyModifiers system to properly allow keybinds to be triggered when multiple modifiers are pressed.
    • Fix setting keybinds while using keyboard inputs to select the menu. Closes #9793
  • Fix LoadingErrorScreen inner headers are not centered. Closes #9687
  • Fix TagLoader error not printing tag name correctly. Closes #9693
  • Fix fire related mobs not taking enough freezing damage. Closes #9686
  • Fix missing patch for Item.onInventoryTick. Closes #9812
  • Fix ASMAPI.getSystemPropertyFlag() not working as expected (CoreMods#45)
  • Fix slightly offset mods screen link positioning, backport of #9860 (#9861)
  • Fix NPE when acceptableValues in defineInList() does not allow nulls, backport of #9903 (#9907)
  • Prevent mixins from crashing the game when there are missing mods, backport of the same fix for 1.20.4 (#9916)
  • Fix early window crash when parsing options.txt, backport of #9933 (#9934)
  • Fix erroneous patch in FireBlock. Closes #9996
  • Fix LevelSettings ignoring data configuration. Closes #9938


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