Automatic season search doesn't produce a result

Sonarr version (exact version): 4.0.12.2823
Mono version (if Sonarr is not running on Windows): 6.0.13
OS: Ubuntu server
Debug logs:
Description of issue:

I have this anime series called Beastars, im trying to download its third season by clicking on the automatic search icon (magnifying glass)

when doing so, in prowlarr history it shows every searches it did. First it tries to search episode by episode but the query results is zero. Then after around two minutes it decides to search only for the series and season name without any episode attached.

this last one produces 7 results

following the url, it shows what the results are and the one underlined in red is the one it should be downloading according to my custom formats, but it doesnt download it. Can someone help please?

Custom formats:

{
  "name": "Erai-raws",
  "includeCustomFormatWhenRenaming": false,
  "specifications": [
    {
      "name": "erai-raws",
      "implementation": "ReleaseGroupSpecification",
      "negate": false,
      "required": true,
      "fields": {
        "value": "\\b(erai-raws)\\b"
      }
    }
  ]
}
{
  "name": "Erai-raws HEVC",
  "includeCustomFormatWhenRenaming": false,
  "specifications": [
    {
      "name": "x265",
      "implementation": "ReleaseTitleSpecification",
      "negate": false,
      "required": true,
      "fields": {
        "value": "[xh][ ._-]?265|\\bHEVC(\\b|\\d)"
      }
    },
    {
      "name": "Erai-raws",
      "implementation": "ReleaseGroupSpecification",
      "negate": false,
      "required": true,
      "fields": {
        "value": "\\b(Erai-raws)\\b"
      }
    }
  ]
}

You’ll need to look at Sonarr’s debug logs to see if that result was found/why it was rejected.

If you do an Interactive Search does that result appear? If so, what reason does Sonarr list for it being rejected, if any?

i just checked and there wasn’t any trace of that result. Also i even did an interactive search and it doesnt appear either