javac rejects code with annotation applicable to fields

this code:

import java.lang.annotation.*;

@Target({ElementType.FIELD, ElementType.CONSTRUCTOR})
@Retention(RetentionPolicy.RUNTIME)
@interface Ann {
}
record R(@Ann String str) {
  R {}
}

is rejected by the compiler even when the annotation is applicable to fields.

reported by Tagir on amber-dev:
https://mail.openjdk.java.net/pipermail/amber-dev/2020-August/006516.html