Text in text field moves when selected
So I just spent an age creating a pdf with editable text fields.
Whenever I select a field with text in it, the text moves! It drops down by about 2 millimeters and then pops back into position when I click away from it. However, if I enter *new* text in the field it stays in the shifted position, resulting in a doc with text all out of line. Is this a setting I can turn off?
When I look at the bounding boxes of the text field, they haven't moved, it is only the text inside the boxes that is shifting.

