Fixed #6158

core/src/mindustry/world/blocks/environment/StaticTree.java

@@ -10,6 +10,7 @@ public class StaticTree extends StaticWall{
 
     public StaticTree(String name){
         super(name);
+        variants = 0;
     }
 
     @Override

core/src/mindustry/world/blocks/payloads/PayloadBlock.java

@@ -25,6 +25,7 @@ public class PayloadBlock extends Block{
 
         update = true;
         sync = true;
+        group = BlockGroup.payloads;
         envEnabled |= Env.space;
     }
 

core/src/mindustry/world/meta/BlockGroup.java

@@ -1,7 +1,7 @@
 package mindustry.world.meta;
 
 public enum BlockGroup{
-    none, walls(true), projectors(true), turrets(true), transportation(true), power, liquids(true), drills, units, logic(true);
+    none, walls(true), projectors(true), turrets(true), transportation(true), power, liquids(true), drills, units, logic(true), payloads(true);
 
     /** if true, any block in this category replaces any other block in this category. */
     public final boolean anyReplace;