The forms do not display as they should : The background color is not the same as that of the documents, and seems to follow the theme. Note: Okular is apparently not the only software in this case. This could be an upstream problem, to be followed... STEPS TO REPRODUCE 1. Have a dark theme 2. Use a PDF with form. OBSERVED RESULT In white background document, the form is black EXPECTED RESULT The form should be white. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Neon (available in About System) KDE Plasma Version: 5.19.0 KDE Frameworks Version: 5.70.0 Qt Version: 5.14.2
Can reproduce. Looks like the forms respect the active color scheme, which is not really correct here since the rest of the document does not. They should be either hardcoded to a light color scheme, or follow the document's own color scheme (which itself can be internally changed in Okular).
It's an easily reproducible bug, but I can't tell if it's an okular bug, or an upstream bug (as in the way Plasma handles themes, I'm not sure...) : LibreOffice (under Plasma anyway) has the same bug, that I reported to them, but that I can't find anymore :-/.