Optimizer Trace Produces Invalid JSON for Quoted Table Alias

CREATE TABLE t(a INT);

INSERT INTO t VALUES (1);

SET optimizer_trace='enabled=on';

SELECT * FROM t AS `a"b` WHERE a=1;

-- a

-- 1

SELECT JSON_VALID(trace) AS optimizer_trace_is_valid_json FROM information_schema.optimizer_trace; -- 0

EXPLAIN FORMAT=JSON

SELECT * FROM t AS `a"b` WHERE a=1;

EXPLAIN

{

  "query_block": {

    "select_id": 1,

    "cost": 0.0110178,

    "nested_loop": [

      {

        "table": {

          "table_name": "a"b",

          "access_type": "ALL",

          "loops": 1,

          "rows": 1,

          "cost": 0.0110178,

          "filtered": 100,

          "attached_condition": "`a"b`.a = 1"

        }

      }

    ]

  }

}