[WIP] Exception should be thrown when parent is changed

[MartinZikmund]

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Please check if your PR fulfills the following requirements:

• [ ] Docs have been added/updated which fit documentation template (for bug fixes / features)
• [ ] Unit Tests and/or UI Tests for the changes have been added (for bug fixes / features) (if applicable)
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• [ ] Contains NO breaking changes
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[github-actions[bot]]

This PR is stale because it has been open 60 days with no activity. Remove stale label or comment or it will be closed in 10 days.

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This PR was closed because it has been stalled for 10 days with no activity.