RE: BUG FOUND - Webforms that are created from a PDF which already have Multiline Form Fields inserted do not display entire text in the form when filled out. Works as expected when Multiline Text Field is created while creating the webform on the acrobat.adobe.com website.

-Create a Text Field in a PDF, set it to Multiline from within Acrobat Pro

-Create webform by upload that PDF with the Multiline Text Field

-Fill out the webform and create new lines within the Multiline Text Field by hitting enter and adding text to each line, making sure that a scroll bar appears to indicate you are entering text beyond the display limit of the box

-Submit the webform

-Check the completed webform and see that not all of the lines appear in the completed form

Note that when a Multiline Text Field is created during the webform creation/webform editing workflow within acrobat.adobe.com, submitted text in that Multiline Text Field is resized to fit the box when the webform is submitted. So you can view a form submission as long as there weren't too many lines for the text to resize small enough.

Opinion: While regular PDF form creation workflow from within Acrobat's desktop software is definitely power-user centered, it seems that the Webform workflow is supposed to be more approachable to those who don't have as much experience with Acrobat. I think having an option worded like "Limit number of lines to height of textbox" or "Disable Scrolling for this field" would greatly improve the user experience. I was able to find a script that does this, and I knew how to use that script, but I don't believe that many people who use these Webforms will know how to get around this situation. The script in question:

var myDoc = event.target;

var f = myDoc.getField("Form[0].SubForm[0].TextField1[0]");

f.doNotScroll = true;