diff --git a/src/backend/access/gin/ginpostinglist.c b/src/backend/access/gin/ginpostinglist.c
index 8b166c738c7..c614c646c2b 100644
--- a/src/backend/access/gin/ginpostinglist.c
+++ b/src/backend/access/gin/ginpostinglist.c
@@ -335,8 +335,17 @@ ginPostingListDecodeAllSegments(GinPostingList *segment, int len, int *ndecoded_
 		}
 
 		/* copy the first item */
+		/*
+		 * Keep this commented out.
+		 * See comments in itemptr_to_uint64().
+		 * 
+		 * FIXME: Correct like this in other files (e.g., ginpostinglist.c and gist.c)
+		 * if we can reproduce the cases.
+		 */
+#if 0
 		Assert(OffsetNumberIsValid(ItemPointerGetOffsetNumber(&segment->first)));
-		Assert(ndecoded == 0 || ginCompareItemPointers(&segment->first, &result[ndecoded - 1]) > 0);
+#endif
+			Assert(ndecoded == 0 || ginCompareItemPointers(&segment->first, &result[ndecoded - 1]) > 0);
 		result[ndecoded] = segment->first;
 		ndecoded++;
 
diff --git a/src/test/regress/expected/gin.out b/src/test/regress/expected/gin.out
index 65730adcfe0..8454ee25bb8 100644
--- a/src/test/regress/expected/gin.out
+++ b/src/test/regress/expected/gin.out
@@ -310,3 +310,12 @@ select count(*) from t_gin_test_tbl where j @> '{}'::int[];
 reset enable_seqscan;
 reset enable_bitmapscan;
 drop table t_gin_test_tbl;
+--
+-- Github issue: https://github.com/apache/cloudberry/issues/1222
+--
+begin;
+create table t_issue_1222(i int4[]) with (appendonly=true);
+create index t_issue_1222_idx on t_issue_1222 using gin (i)
+  with (fastupdate = on, gin_pending_list_limit = 4096);
+insert into t_issue_1222 select array[1, 2, g] from generate_series(1, 400000) g;
+abort;
diff --git a/src/test/regress/expected/gin_optimizer.out b/src/test/regress/expected/gin_optimizer.out
index ef5c879df76..f7df2cf49e8 100644
--- a/src/test/regress/expected/gin_optimizer.out
+++ b/src/test/regress/expected/gin_optimizer.out
@@ -308,3 +308,12 @@ select count(*) from t_gin_test_tbl where j @> '{}'::int[];
 reset enable_seqscan;
 reset enable_bitmapscan;
 drop table t_gin_test_tbl;
+--
+-- Github issue: https://github.com/apache/cloudberry/issues/1222
+--
+begin;
+create table t_issue_1222(i int4[]) with (appendonly=true);
+create index t_issue_1222_idx on t_issue_1222 using gin (i)
+  with (fastupdate = on, gin_pending_list_limit = 4096);
+insert into t_issue_1222 select array[1, 2, g] from generate_series(1, 400000) g;
+abort;
diff --git a/src/test/regress/sql/gin.sql b/src/test/regress/sql/gin.sql
index db702e12adf..d52f19e2d36 100644
--- a/src/test/regress/sql/gin.sql
+++ b/src/test/regress/sql/gin.sql
@@ -172,3 +172,13 @@ reset enable_seqscan;
 reset enable_bitmapscan;
 
 drop table t_gin_test_tbl;
+
+--
+-- Github issue: https://github.com/apache/cloudberry/issues/1222
+--
+begin;
+create table t_issue_1222(i int4[]) with (appendonly=true);
+create index t_issue_1222_idx on t_issue_1222 using gin (i)
+  with (fastupdate = on, gin_pending_list_limit = 4096);
+insert into t_issue_1222 select array[1, 2, g] from generate_series(1, 400000) g;
+abort;