Do not influence the character limit with line breaks. When creating forms for colleagues, the text field should be filled with a certain number of characters, which should actually correspond to that of Indesign. With longer words, however, a line break is calculated in an unfavourable way and is not recognised correctly by the system. Furthermore, it would be ideal to be able to create a two-column text form field so that the design of Indesign is better retained.
And by the way: It should also be possible to create images as form fields with Acrobat DC - even with superimposed logo or text bars. For example, for a poster template - where a logo is always shown at the top right and the individual image can be selected below. It should also be possible to place text elements over these images. It would also be great if you could define a field as a QR code - where the user can simply enter the URL and the QR code is automatically created as in ID.