Unimplemented action: POPPLER_ACTION_UNKNOWN
Opening a PDF, I got the following warning on the console:
Unimplemented action: POPPLER_ACTION_UNKNOWN, please post a bug report in Evince issue tracker (https://gitlab.gnome.org/GNOME/evince/issues) with a testcase.
The form has a "Submit" button, which I think should open a mailto: link if I'm reading the PDF correctly.
The file is attached, originally from https://www.wilmot.ca/en/living-here/resources/Documents/Water_-_Pre-Authorized_Plan_Form.pdf