I created a form based on what I understand. that's what you try to do? ExpireBox | NewForm1.xdp Furthermore, I am attaching a link that takes you to a list of scripts to change the textfield.
The text that i copy is an example text, i try all method to copy/past the text "from text to textfield" or "from textfield to textfield" with "Rich Text" and the results is the same. This is the link to my sample: ExpireBox | NewForm1.xdp
you're right, the solution in the link affects only ES2.Try to download "Acrobat Reader DC" instead of "Adobe Pro XI". After checking whether PDF Preview tab is grayed out in the View menu.