We have a fillable PDF employment application that includes a true digital signature field that was created in Adobe Acrobat Pro. In the original file, the signature field exists and functions correctly, but when the PDF is uploaded into HubSpot and then downloaded by users all of the standard form fields such as text, checkboxes, etc., remain editable, but the digital signature field is completely missing. This also happens when downloading the file into Adobe Acrobat Reader and occurs regardless of browser or download method.
I have confirmed that the original file size and the file size after being downloaded from HubSpot remain the same, but that the signature field only disappears after the file is uploaded and downloaded to/ from HubSpot.
Replacing the electronic signature field with a standard fillable text box is not an option for us. How can we resolve this issue so that the elctronic signature field functions properly after the PDF is uploaded onto HubSpot?