Paper/nms-patches/WorldGenGroundBush.patch

--- a/net/minecraft/server/WorldGenGroundBush.java
+++ b/net/minecraft/server/WorldGenGroundBush.java
@@ -29,8 +29,19 @@
                     }
                 }
             }
+        // CraftBukkit start - Return false if gen was unsuccessful
+        } else {
+            return false;
         }
+        // CraftBukkit end
 
         return true;
     }
+
+    // CraftBukkit start - decompile error
+    @Override
+    public boolean generate(GeneratorAccess generatoraccess, ChunkGenerator<? extends GeneratorSettingsDefault> chunkgenerator, Random random, BlockPosition blockposition, WorldGenFeatureTreeConfiguration fc) {
+        return super.a(generatoraccess, chunkgenerator, random, blockposition, fc);
+    }
+    // CraftBukkit end
 }