Error is not correctly displayed for nested objects starting from 0.14.3

[alycklama]

I noticed that the error message is sometimes incorrect when decoding nested objects.

package org.my

import cats.implicits._
import io.circe.Decoder
import io.circe.parser.decode
import io.circe.generic.semiauto.deriveDecoder

object MyMain extends App {
  case class Location(city: String)
  case class Person(name: String, location: Location)

  val jsonString =
    """{
      | "name": "John",
      | "location": {
      | }
      |}""".stripMargin

  implicit val decoder: Decoder[Person] = deriveDecoder[Person]

  val result = decode[Person](jsonString)
  println(result)
  println(result.left.map(_.show))
}

For 0.14.2 it works as expected because it's clear where the missing property comes from (i.e. .location.city):

Left(DecodingFailure(Missing required field, List(DownField(city), DownField(location))))
Left(DecodingFailure at .location.city: Missing required field)

For 0.14.3 it doesn't work as expected as the root (.location) seems to be missing only in the .show:

Left(DecodingFailure(Missing required field, List(DownField(city), DownField(location))))
Left(DecodingFailure at .city: Missing required field)

For 0.14.4 and 0.14.5 the output is as follows where both miss the root object (i.e. .location):

Left(DecodingFailure at .city: Missing required field)
Left(DecodingFailure at .city: Missing required field)