Conflicting columns names under case-insensitive policy lead to either memory leak or incorrect result

select version, commit_id, commit_message from sys.version;
+-----------------+-------------------------------------------+---------------------------------------------------------------------------------+
|     version     |                 commit_id                 |                                 commit_message                                  |
+-----------------+-------------------------------------------+---------------------------------------------------------------------------------+
| 1.7.0-SNAPSHOT  | 3186217e5abe3c6c2c7e504cdb695567ff577e4c  | DRILL-4607: Add a split function that allows to separate string by a delimiter  |
+-----------------+-------------------------------------------+---------------------------------------------------------------------------------+

select r_regionkey as XYZ, r_name as xyz FROM cp.`tpch/region.parquet`;
Error: SYSTEM ERROR: IllegalStateException: Memory was leaked by query. Memory leaked: (131072)
Allocator(op:0:0:1:Project) 1000000/131072/2490368/10000000000 (res/actual/peak/limit)


Fragment 0:0

select n_nationkey as XYZ, n_regionkey as xyz FROM cp.`tpch/nation.parquet`;
+------+
| XYZ  |
+------+
| 0    |
| 1    |
| 1    |
| 1    |
| 4    |
| 0    |
| 3    |