MariaDB: inconsistent SELECT results involving JSON

When executing the following statments on MariaDB 10.6.14 SET @json_1 = JSON_OBJECT('id', 'name'); SET @json_result_1 = JSON_OBJECT('test', @json_1); SELECT @json_result_1; SET @json_result_2 = JSON_OBJECT('test', JSON_OBJECT('id', 'name')); SELECT @json_result_2; I receive the following results: For @json_result_1: {"test": "{\"id\": \"name\"}"} And for @json_result_2: {"test": {"id": "name"}} How does it come that I retrieve different result? Aren't those JSON string supposed to be internally all treated as TEXT?