Sargable index not sarged

CREATE INDEX ix20 ON default(ALL a1) WHERE type = "docs";

SELECT d1, d2.id, d2.c2

FROM default AS d1 USE KEYS "2345234"

LEFT JOIN default AS d2 ON d2.type = "docs" AND ANY id IN d2.a1 SATISFIES id = META(d1).id END ;

"errors": [

        {

            "code": 4000,

            "msg": "Sargable index not sarged; pred=(((`d2`.`type`) = \"docs\") and any `id` in (`d2`.`a1`) satisfies (`id` = (meta(`d1`).`id`)) end), sarg_keys=[(all ((`d2`.`a1`)))], error=Plan error: sarg.VisitAny: unexpected array id (0) for ANY expression any `id` in (`d2`.`a1`) satisfies (`id` = (meta(`d1`).`id`)) end"

        }

    ]