Improve an issue to do with block breaking ghosting back, note this is not a fully fix, but improves the issue quite a bit.

src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java

@@ -393,6 +393,10 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI, ViaVe
         return getConfig().getDouble("hologram-y", -1D);
     }
 
+    public boolean isBlockBreakPatch() {
+        return getConfig().getBoolean("block-break-patch", true);
+    }
+
     public boolean isAutoTeam() {
         // Collision has to be enabled first
         return isPreventCollision() && getConfig().getBoolean("auto-team", true);

src/main/java/us/myles/ViaVersion/api/ViaVersionConfig.java

@@ -93,4 +93,11 @@ public interface ViaVersionConfig {
      * @return true if automatic teaming is enabled
      */
     boolean isAutoTeam();
+
+    /**
+     * Get if our block break patch is enabled to prevent weird ghost glitches.
+     *
+     * @return true if it is enabled.
+     */
+    boolean isBlockBreakPatch();
 }

src/main/java/us/myles/ViaVersion/api/minecraft/Position.java

@@ -1,12 +1,14 @@
 package us.myles.ViaVersion.api.minecraft;
 
 import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.ToString;
 
 @AllArgsConstructor
 @Getter
 @ToString
+@EqualsAndHashCode
 public class Position {
     private Long x;
     private Long y;

src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/packets/WorldPackets.java

@@ -6,7 +6,6 @@ import org.spacehq.opennbt.tag.builtin.StringTag;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.ViaVersion;
 import us.myles.ViaVersion.api.minecraft.Position;
-import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.protocol.Protocol;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
@@ -174,11 +173,34 @@ public class WorldPackets {
                 });
             }
         });
+
+        // Block Change Packet
+        protocol.registerOutgoing(State.PLAY, 0x23, 0x0B, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.POSITION);
+                map(Type.VAR_INT);
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        Position pos = wrapper.user().get(EntityTracker.class).getCurrentlyDigging();
+                        if (pos != null) {
+                            if (wrapper.get(Type.POSITION, 0).equals(pos)) {
+                                // cancel this one
+                                if (wrapper.get(Type.VAR_INT, 0) != 0) {
+                                    wrapper.cancel();
+                                    wrapper.user().get(EntityTracker.class).setCurrentlyDigging(null);
+                                }
+                            }
+                        }
+                    }
+                });
+            }
+        });
         /* Packets which do not have any field remapping or handlers */
 
         protocol.registerOutgoing(State.PLAY, 0x25, 0x08); // Block Break Animation Packet
         protocol.registerOutgoing(State.PLAY, 0x24, 0x0A); // Block Action Packet
-        protocol.registerOutgoing(State.PLAY, 0x23, 0x0B); // Block Change Packet
         protocol.registerOutgoing(State.PLAY, 0x22, 0x10); // Multi Block Change Packet
         protocol.registerOutgoing(State.PLAY, 0x27, 0x1C); // Explosion Packet
         protocol.registerOutgoing(State.PLAY, 0x2A, 0x22); // Particle Packet
@@ -228,6 +250,26 @@ public class WorldPackets {
                         }
                     }
                 });
+                // Digging patch (prevents it glitching)
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        if(!ViaVersion.getConfig().isBlockBreakPatch()) return;
+                        
+                        EntityTracker entityTracker = wrapper.user().get(EntityTracker.class);
+                        final Position block = wrapper.get(Type.POSITION, 0);
+                        int status = wrapper.get(Type.UNSIGNED_BYTE, 0);
+                        if (status == 0) {
+                            entityTracker.setCurrentlyDigging(null);
+                        }
+                        if (status == 1) {
+                            entityTracker.setCurrentlyDigging(null);
+                        }
+                        if (status == 2) {
+                            entityTracker.setCurrentlyDigging(block);
+                        }
+                    }
+                });
             }
         });
 

src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/storage/EntityTracker.java

@@ -44,6 +44,8 @@ public class EntityTracker extends StoredObject {
     private Long lastPlaceBlock = -1L;
     @Setter
     private int entityID;
+    @Setter
+    private Position currentlyDigging = null;
     private boolean teamExists = false;
 
     public EntityTracker(UserConnection user) {

src/main/resources/config.yml

@@ -27,3 +27,5 @@ use-new-deathmessages: false
 # This will suppress the following error: 'Unable to get entity for ID: xxxx'
 # This error message means one of you plugins is sending bad packets!
 suppress-entityid-errors: false
+# Our patch for block breaking issue, if you have issues with block updates then disable this.
+block-break-patch: true