TYPO3 Core

I was able to reproduce the misbehavior for finisher variants like the following (on top level of a form definition):

variants:
  -
    identifier: variant-finishers-1
    condition: 'formValues["radiobutton-1"] == "aa"'
    finishers:
      -
        options:
          subject: '{subject}'
          senderAddress: '{email}'
          senderName: '{fullname}'
          replyToRecipients:
            '{email}': ''
          format: html
          attachUploads: true
          recipients:
            aa@aa.h1d3.de: AA
        identifier: EmailToReceiver
  -
    identifier: variant-finishers-2
    condition: 'formValues["radiobutton-1"] == "bb"'
    finishers:
      -
        options:
          subject: '{subject}'
          senderAddress: '{email}'
          senderName: '{fullname}'
          replyToRecipients:
            '{email}': ''
          format: html
          attachUploads: true
          recipients:
            bb@aa.h1d3.de: BB
        identifier: EmailToReceiver

Patch set 1 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/75009

Patch set 2 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/75009

Patch set 3 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/75009

Patch set 4 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/75009

Patch set 1 for branch 10.4 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/76164

Patch set 1 for branch 11.5 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/76165