Bugfix: Don't increase the page number in the loop, because the items are moved to another subtree, and therefore is not any longer part of the descendants call. Now we avoid the leak of items when moving to recycle bin.

src/Umbraco.Core/Services/Implement/ContentService.cs

@@ -1930,7 +1930,7 @@ namespace Umbraco.Core.Services.Implement
             var total = long.MaxValue;
             while (page * pageSize < total)
             {
-                var descendants = GetPagedDescendantsLocked(originalPath, page++, pageSize, out total, null, Ordering.By("Path", Direction.Ascending));
+                var descendants = GetPagedDescendantsLocked(originalPath, page, pageSize, out total, null, Ordering.By("Path", Direction.Ascending));
                 foreach (var descendant in descendants)
                 {
                     moves.Add(Tuple.Create(descendant, descendant.Path)); // capture original path