[Bug] Input fields - v8.1.0 - PDF Editing - 'An error occurred during the work with the document'

[jb2barrels]

This issue is unique.

• [X] I have used the search tool and did not find an issue describing my bug.

Operating System

Windows 10 / 8.1 / 7, Linux (RPM package)

Version information

8.1.0

Expected Behavior

Be able to type in the PDF input field

Actual Behavior

Upon starting to type in an input field, receive error: "An error occurred during the work with the document. Use the 'Save as...' option to save the file backup copy to a drive"

Reproduction Steps

1. Tested on both using OnlyOffice on Windows 11 (installed with exe) or Fedora 40 Linux (installed with flatpak)
2. Search Google for a sample pdf: "sample pdf with forms"
3. Download any sample PDF that has input fields with forms
4. Open the PDF file using OnlyOffice PDF
5. Try typing inside a fillable input field such as "Name" or "Address"
6. You will receive the error

Additional information

Example screenshot of error:

[Rita-Bubnova]

Duplicate of https://github.com/ONLYOFFICE/DocumentServer/issues/2768.