How can you ensure that the fitting of a text in the text field also works with multi-line texts?
Concrete:
- The text in the field framed in red should be formatted over 2 lines in terms of width like the text in the field framed in green.
I.e. the text width should be adjusted to 2 lines.

I was only able to adapt the text to the size of the text field with single-line text fields, since the text field is a multi-line text field, fitting (in my opinion) is not possible. We'll ask Autodesk Support again.
Single-line option = OFF (text can therefore be multi-line) => Fitting text = OFF

Single line of text = ON => Fit text can be switched ON - text will fit within the text frame

See also supportcase
CaseNo:20854688. Subject:Inventor Schriftkopf – mehrzeilige Textfelder – Text einpassen