Nextcloud not regenerating previews when uploading changed file with the same name

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Nextcloud version: 20.0.8
Operating system and version: Docker on unRaid 6.9.1
Apache or nginx version: 1.18.0
PHP version: 7.4.15

The issue you are facing:
Lightbox preview for image files is not regenerating after file was changed and synced using Desktop app. Thumbnails are correctly regenerated and show changed files.

Is this the first time you’ve seen this error? : Y

Steps to replicate it:

  1. Create file
  2. Modify the file on other computer
  3. Sync using Nextcloud desktop app

The output of your Nextcloud log in Admin > Logging:

no error

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'datadirectory' => '/data',
  'instanceid' => '',
  'passwordsalt' => '',
  'secret' => '',
  'trusted_domains' => 
  array (
    0 => '192.168.1.5',
    1 => '',
  ),
  'overwrite.cli.url' => '',
  'overwritehost' => '',
  'overwriteprotocol' => 'https',
  'dbtype' => 'mysql',
  'version' => '20.0.8.1',
  'dbname' => 'nextcloud',
  'dbhost' => '192.168.1.4:3306',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => '',
  'dbpassword' => '',
  'installed' => true,
  'mail_from_address' => '',
  'mail_smtpmode' => 'smtp',
  'mail_sendmailmode' => 'smtp',
  'mail_domain' => 'gmail.com',
  'mail_smtpsecure' => 'tls',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpauth' => 1,
  'mail_smtphost' => 'smtp.gmail.com',
  'mail_smtpport' => '587',
  'mail_smtpname' => '@gmail.com',
  'mail_smtppassword' => '',
  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'enable_previews' => true,
  'enabledPreviewProviders' =>
  array (
  'OC\Preview\PNG',
  'OC\Preview\JPEG',
  'OC\Preview\GIF',
  'OC\Preview\BMP',
  'OC\Preview\XBitmap',
  'OC\Preview\MP3',
  'OC\Preview\TXT',
  'OC\Preview\MarkDown',
  'OC\Preview\Illustrator',
  'OC\Preview\Photoshop',
  'OC\Preview\PDF',
  'OC\Preview\TIFF',
  'OC\Preview\SVG',
  'OC\Preview\Movie',
  'OC\Preview\MSOffice2007',
  'OC\Preview\MSOffice'),
);

The output of your Apache/nginx/system log in /var/log/____:

no error