I saw a bug where I added text fields to a page in a multi-page PDF (call it page 5 of 10). Then I added a new page to the PDF (call it a new page 4, which then made pages 5-10 become pages 6-11) and the result was that all my text fields remained on page 5 when the actual relevant page was now page 6.

The issue was resolved when I deleted an extra page but this was a very counter intuitive outcome as I expect the Acrobat added text fields to remain associated with the page that I added them (regardless if I add or delete previous pages in the PDF).