Insert_text and and Adobe Acrobat DC has encountered an unknown error.

[Avtonkadov]

With PyMuPDF I add text to pdf, but then if open output file with Adobe Acrobat and try to edit this file, it massage error.

import io
import os
import fitz
doc = fitz.open("in.pdf")
ffile = "C:/windows/fonts/times.ttf"  
text = "Раздел 22. Book 1. Chapter 2.pdf"
for page in doc:
    w=page.rect.width
    h=page.rect.height
    page.clean_contents()
    page.insert_font (fontname="f0", fontfile=ffile, encoding=fitz.TEXT_ENCODING_CYRILLIC)
    if page.rotation==270:
        ww = int(w-190/0.352)
        #excess = page.insert_textbox(fitz.Rect(0, ww, 14,ww+300), text+"iijij",fontname="f0", fontsize = 12, rotate=-90)
        excess = page.insert_text(fitz.Point(5, ww), text,fontname="f0", fontsize = 12, rotate=-90)
    else:
        ww = int(w-190/0.352)
        #excess = page.insert_textbox(fitz.Rect(ww, h-14, ww+300,h+14), text,fontname="f0", fontsize = 12, rotate=0)
        excess = page.insert_text(fitz.Point(ww, h-5), text, fontname="f0", fontsize = 12, rotate=0)
doc.ez_save( "out.pdf")
print (doc.page_count)
doc.close()

This is video, how it works

This is input file. Input file from Autodesk Autocad (dwg to pdf.pc3)
in.pdf
This is output file
out.pdf

[JorjMcKie]

You did not mention your PyMuPDF version.
Presumably your problem has to do with an issue fixed in the most current release 1.21.1rc1.
I checked your script and reproducer PDF and no problem occurred.

[Avtonkadov]

Thank You very much!

[yang-521]

I also encountered this problem in version 1.24.11, python3.8.10

[yang-521]

I updated python to 3.13.2 and pymupdf to the latest version, but this problem still exists. It is present in all pdf files that have inserted text using pymupdf. Before the text was inserted, acrobat could edit normally. I have also tried editing with other versions of acrobat. But the same problem exists........ Very strange. Is this a problem of the computer environment? @JorjMcKie

[JorjMcKie]

I am not able to tell what the problem of Adobe Acrobat may have.
The text inserted with PyMuPDF follows the standard PDF specifications, can be displayed by all PDF viewers and likewise can be extracted by relevant software.
So I am sorry to say that I have no advice on how to proceed.