This bug is still there. I am using Okular 0.20.2 with KDE 4.14.2 on Kubuntu 14.10. Please try this pdf as a test:
https://www.jair.org/media/301/live-301-1562-jair.pdf
Trim margins works normally. If you change paper colour to gray (or something else) from Settings -> Configure Okular -> Accessibility -> Change colours -> change paper colour. Trim margins no longer does anything.
This bug is still there. I am using Okular 0.20.2 with KDE 4.14.2 on Kubuntu 14.10. Please try this pdf as a test:
https:/ /www.jair. org/media/ 301/live- 301-1562- jair.pdf
Trim margins works normally. If you change paper colour to gray (or something else) from Settings -> Configure Okular -> Accessibility -> Change colours -> change paper colour. Trim margins no longer does anything.