functional.sqlancer.tidb_15844_test. NATURAL RIGHT JOIN results in an unexpected "Unknown column" error

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Full history of outcomes and elapsed time, ms:
NN SNAP_INFO CS_outcome SS_outcome CS_run_time SS_run_time CS_run_beg CS_run_end SS_run_beg SS_run_end
1 5.0.3.1657 2025.06.20 8b4d2 P P 608 372 2025.06.26 11:34:13.439 2025.06.26 11:34:14.047 2025.06.26 10:30:18.808 2025.06.26 10:30:19.180
2 5.0.3.1657 2025.06.19 4bd4c P P 637 377 2025.06.20 05:38:22.129 2025.06.20 05:38:22.766 2025.06.20 04:34:32.572 2025.06.20 04:34:32.949
3 5.0.3.1657 2025.06.11 dae6f P P 646 382 2025.06.19 11:09:55.306 2025.06.19 11:09:55.952 2025.06.19 10:05:59.032 2025.06.19 10:05:59.414
4 5.0.3.1657 2025.06.10 dbc92 P P 671 374 2025.06.11 08:56:06.125 2025.06.11 08:56:06.796 2025.06.11 07:52:00.916 2025.06.11 07:52:01.290
5 5.0.3.1656 2025.06.05 00512 P P 637 378 2025.06.10 10:11:25.559 2025.06.10 10:11:26.196 2025.06.10 09:07:02.763 2025.06.10 09:07:03.141

Elapsed time, ms. Chart for last 5 runs:

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