Bug 425520

Summary: Drop-downs in PDF form do not work
Product: [Applications] okular Reporter: Alexander Potashev <aspotashev>
Component: PDF backendAssignee: Okular developers <okular-devel>
Status: RESOLVED UPSTREAM    
Severity: normal CC: aacid
Priority: NOR    
Version First Reported In: 1.9.3   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Alexander Potashev 2020-08-18 22:20:57 UTC 
SUMMARY
The list of options for the fields that have it cannot be viewed by clicking on the little arrow on the right.

STEPS TO REPRODUCE
1. Open a PDF form with drop-down fields - e.g. "Registration Form" from https://www.muenchen.de/rathaus/home_en/Department-of-Public-Order/Registration-Deregistration.html
Not attaching the PDF to this bug report because the PDF contains something that looks like a copyright notice, sorry.
2. Scroll down to page 2 and click on the arrow for the field under "Civil status".

OBSERVED RESULT
Nothing happens.

EXPECTED RESULT
The list of suggested value options should appear, e.g. LD, VH, ... for  this particular field.

The same procedure works correctly in the Google Chrome's integrated PDF viewer.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.17.5
(available in About System)
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.13.2

ADDITIONAL INFORMATION
Comment 1 Albert Astals Cid 2020-08-19 16:41:33 UTC 
It's a bug of either the file, Adobe Reader/Chrome, or the PDF spec

https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/613