Form Field Extension Logic: Differentiate between save and path transition

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Hi everyone,

did someone came across an option to verify, whether the save has been triggered by the save button or by a path transition in a form field extension logic class?
I did check to no avail:
- Public properties
- Non-public properties
- Passing {CURRENT_PATH} inside the configuration. Unfortunately it was empty too :(

Does someone has another idea?

Best regards,
Daniel