Fix issue with offset/origin when pasting a clipboard via API without wrapping into a BlockArrayClipboard

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/regions/plotsquared/FaweDelegateRegionManager.java

@@ -220,13 +220,17 @@ public class FaweDelegateRegionManager {
                 Clipboard clipB = Clipboard.create(regionB, UUID.randomUUID());
                 ForwardExtentCopy copyA = new ForwardExtentCopy(sessionA, regionA, clipA, clipA.getMinimumPoint());
                 ForwardExtentCopy copyB = new ForwardExtentCopy(sessionB, regionB, clipB, clipB.getMinimumPoint());
+                copyA.setCopyingBiomes(true);
+                copyB.setCopyingBiomes(true);
                 try {
                     Operations.completeLegacy(copyA);
                     Operations.completeLegacy(copyB);
-                    clipA.paste(sessionB, swapPos.getBlockVector3(), true);
-                    clipB.paste(sessionA, pos1.getBlockVector3(), true);
-                    sessionA.flushQueue();
-                    sessionB.flushQueue();
+                    clipA.flush();
+                    clipB.flush();
+                    clipA.paste(sessionB, swapPos.getBlockVector3(), true, true, true);
+                    clipB.paste(sessionA, pos1.getBlockVector3(), true, true, true);
+                    sessionA.close();
+                    sessionB.close();
                 } catch (MaxChangedBlocksException e) {
                     e.printStackTrace();
                 }

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/DiskOptimizedClipboard.java

@@ -276,7 +276,7 @@ public class DiskOptimizedClipboard extends LinearClipboard implements Closeable
             int offsetZ = byteBuffer.getShort(20);
             region.shift(BlockVector3.at(offsetX, offsetY, offsetZ));
             BlockArrayClipboard clipboard = new BlockArrayClipboard(region, this);
-            clipboard.setOrigin(getOrigin());
+            clipboard.setOrigin(getOrigin().add(offset));
             return clipboard;
         } catch (Throwable e) {
             e.printStackTrace();
@@ -289,7 +289,7 @@ public class DiskOptimizedClipboard extends LinearClipboard implements Closeable
         int ox = byteBuffer.getShort(10);
         int oy = byteBuffer.getShort(12);
         int oz = byteBuffer.getShort(14);
-        return BlockVector3.at(ox, oy, oz);
+        return BlockVector3.at(ox, oy, oz).subtract(offset);
     }
 
     @Override

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/clipboard/SimpleClipboard.java

@@ -7,10 +7,10 @@ import com.sk89q.worldedit.regions.Region;
 
 public abstract class SimpleClipboard implements Clipboard {
 
+    protected BlockVector3 offset;
     private final BlockVector3 size;
     private final int area;
     private final int volume;
-    private BlockVector3 offset;
     private BlockVector3 origin;
 
     SimpleClipboard(BlockVector3 dimensions, BlockVector3 offset) {