Freetext annot not showing text

[pablodm00]

Description of the bug

Hello everyone,

I am currently developing an application on the Viktor.ai platform. During the development phase, the app runs locally in a virtual environment (Windows). However, after publishing, it runs on Linux servers managed by the platform.

I am using PyMuPDF to add FreeText annotations to a PDF document. While everything functions perfectly during local development, I’ve encountered an issue after publishing the app to their Linux servers:

The freetext annot gets created, but it does not show the text.

In a PDF editor (I am using Bluebeam Revu) I can resize the textbox, and it shows the text but in red

If I resize again, it now shows the text in the correct colour (black)

I’d appreciate any insights or suggestions on what could be causing this issue. Has anyone encountered a similar problem or can point me in the right direction?

Thank you in advance for your help!

How to reproduce the bug

annot_text = page_export.add_freetext_annot(rect=rect, text=text, fontsize= text_size, align=1)
annot_text.set_oc(oc_names)
annot_text.update()

PyMuPDF version

1.24.14

Operating system

Linux

Python version

3.11

[JorjMcKie]

This is no bug report but a Discussions item.