Jellyfin displaying the same thumbnail for all episodes in a season

[TheDreadPirate]

Can you check the rest of the NFOs? I don't normally use NFOs or save images locally. But I have a test instance and test library that I enabled NFO saver and saving images in the media directory. In the episode NFO it specified the thumbnail that it downloaded or extracted.

Code:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<episodedetails>
  <plot>Misae sends Shin-Chan to the market on an errand</plot>
  <lockdata>false</lockdata>
  <dateadded>2024-09-04 20:58:25</dateadded>
  <title>Running an Errand</title>
  <originaltitle>おつかいに行くゾ / ママの朝は忙しいゾ / お絵かきするゾ</originaltitle>
  <rating>9</rating>
  <year>1992</year>
  <tvdbid>315486</tvdbid>
  <runtime>21</runtime>
  <art>
    <poster>/media/storage2/testShows/Shin-chan [tmdbid-30623]/Season 01/s01e01-thumb.jpg</poster>
  </art>
  <actor>
    <name>Akiko Yajima</name>
    <role>Shinnosuke Nohara (voice)</role>
    <type>Actor</type>
    <sortorder>0</sortorder>
    <thumb>/config/metadata/People/A/Akiko Yajima/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Miki Narahashi</name>
    <role>Misae Nohara (voice)</role>
    <type>Actor</type>
    <sortorder>1</sortorder>
    <thumb>/config/metadata/People/M/Miki Narahashi/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Keiji Fujiwara</name>
    <role>Hiroshi Nohara (voice)</role>
    <type>Actor</type>
    <sortorder>2</sortorder>
    <thumb>/config/metadata/People/K/Keiji Fujiwara/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Satomi Korogi</name>
    <role>Himawari Nohara (voice)</role>
    <type>Actor</type>
    <sortorder>3</sortorder>
    <thumb>/config/metadata/People/S/Satomi Korogi/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Mari Mashiba</name>
    <role>Shiro (voice) / Toru Kazama (voice)</role>
    <type>Actor</type>
    <sortorder>4</sortorder>
    <thumb>/config/metadata/People/M/Mari Mashiba/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Chie Sato</name>
    <role>Bo (voice)</role>
    <type>Actor</type>
    <sortorder>5</sortorder>
    <thumb>/config/metadata/People/C/Chie Sato/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Rokuro Naya</name>
    <role>Bunta Takakura (voice)</role>
    <type>Actor</type>
    <sortorder>6</sortorder>
    <thumb>/config/metadata/People/R/Rokuro Naya/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Michie Tomizawa</name>
    <role>Ume Matsuzaka (voice)</role>
    <type>Actor</type>
    <sortorder>7</sortorder>
    <thumb>/config/metadata/People/M/Michie Tomizawa/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Teiyu Ichiryusai</name>
    <role>Masao Sato (voice)</role>
    <type>Actor</type>
    <sortorder>8</sortorder>
    <thumb>/config/metadata/People/T/Teiyu Ichiryusai/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Yumi Takada</name>
    <role>Midori Ishizaka (voice)</role>
    <type>Actor</type>
    <sortorder>9</sortorder>
    <thumb>/config/metadata/People/Y/Yumi Takada/folder.jpg</thumb>
  </actor>
  <actor>
    <name>Tamao Hayashi</name>
    <role>Nene Sakurada (voice)</role>
    <type>Actor</type>
    <sortorder>10</sortorder>
  </actor>
  <showtitle>Shin Chan</showtitle>
  <episode>1</episode>
  <season>1</season>
  <aired>1992-04-13</aired>
  <fileinfo>
    <streamdetails>
      <video>
        <codec>hevc</codec>
        <micodec>hevc</micodec>
        <bitrate>1248660</bitrate>
        <width>628</width>
        <height>480</height>
        <aspect>4:3</aspect>
        <aspectratio>4:3</aspectratio>
        <framerate>29.97003</framerate>
        <scantype>progressive</scantype>
        <default>True</default>
        <forced>False</forced>
        <duration>21</duration>
        <durationinseconds>1282</durationinseconds>
      </video>
      <audio>
        <codec>opus</codec>
        <micodec>opus</micodec>
        <language>eng</language>
        <scantype>progressive</scantype>
        <channels>2</channels>
        <samplingrate>48000</samplingrate>
        <default>True</default>
        <forced>False</forced>
      </audio>
    </streamdetails>
  </fileinfo>
</episodedetails>

Did you manually add the thumbnails? Or did you enable saving of images locally after the NFO was already generated?