Clear event phase when reusing event object

src/main/java/org/embeddedt/vintagefix/mixin/allocation_rate/MixinBiome.java

@@ -3,6 +3,7 @@
 import net.minecraft.world.biome.Biome;
 import net.minecraftforge.event.terraingen.BiomeEvent;
 import org.embeddedt.vintagefix.annotation.ClientOnlyMixin;
+import org.embeddedt.vintagefix.util.EventUtils;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
@@ -18,6 +19,7 @@ public class MixinBiome {
     @Unique
     private void prepareEvent(BiomeEvent.BiomeColor event, int defaultColor) {
         event.setNewColor(defaultColor);
+        EventUtils.clearPhase(event);
         ((AccessorBiomeColorEvent)event).setOriginalColor(defaultColor);
     }
 

src/main/java/org/embeddedt/vintagefix/util/EventUtils.java

@@ -0,0 +1,28 @@
+package org.embeddedt.vintagefix.util;
+
+import net.minecraftforge.fml.common.eventhandler.Event;
+import net.minecraftforge.fml.common.eventhandler.EventPriority;
+import net.minecraftforge.fml.relauncher.ReflectionHelper;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+
+public class EventUtils {
+    private static final MethodHandle EVENT_PHASE;
+
+    static {
+        try {
+            EVENT_PHASE = MethodHandles.publicLookup().unreflectSetter(ReflectionHelper.findField(Event.class, "phase"));
+        } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static void clearPhase(Event e) {
+        try {
+            EVENT_PHASE.invokeExact(e, (EventPriority)null);
+        } catch(Throwable ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+}