ceskekormidlo.cz - Downloaded form displays incorrect characters
URL: https://ceskekormidlo.cz/wp-content/uploads/2021/02/Formul%C3%A1%C5%99_editovateln%C3%BD_03_Uniqa_Storno_Cesty-1.pdf
Browser / Version: Firefox 103.0 Operating System: Linux Tested Another Browser: Yes Chrome
Problem type: Site is not usable Description: Unable to type Steps to Reproduce: When fill some fields of PDF form with czech characters - "ěščřžýáíé" and I try download a PDF form, downloaded form contain broken characters. For example - "ěščřžýáíé" create ".š Yžýáíé"
View the screenshot
Browser Configuration
- None
From webcompat.com with ❤️
Thanks for the report, I was able to reproduce the issue. After typing "ěščřžýáíé" in one of the fields, downloading the pdf file and opening it with a document viewer, the text displayed is ".š Yžýáíé"

Note:
- The issue is not reproducible on Chrome.
- The changed downloaded pdf file need to be opened in a Document viewer.
Tested with: Browser / Version: Firefox Nightly 105.0a1 (2022-08-04), Firefox Release 103.0.1 Operating System: Ubuntu 20.04.2
Moving to Needsdiagnosis for further investigation.
[qa_31/2022]
This appears to be a known issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1666824
Let's close this a duplicate. I'll ping that bug to see if we can't get an update, and to make sure they're aware of this site also having the problem.
This should be fixed in Firefox Nightly.
It seems that the fix will make it into Firefox 108.