https://bugs.kde.org/show_bug.cgi?id=435246
--- Comment #7 from Jason Liam <jlame...@gmail.com> --- I think i accidentally reproduced the bug. I had previously backed up my pdf file. I remember that when i downloaded the original pdf file from web (without any annotations) it was of size 50 MB. Also my backedup up pdf file (with annotations) is around 67 MB. So no after downloading the backed up file(67 MB) i started adding annotations in it. When this file reached around 67.8 MB i clicked Ctrl+S to save the file. But for some reason my Ubuntu 18.04 started freezing and the file was not saved(which i can see from the * shown at the top). So i had to close okular midway with unsaved changes. Next, after closing okular i tried to open the pdf but to my surprise when the pdf opened, all of its pages were blank. The second thing i noticed was that the same pdf was now of size 50MB instead of 67MB. So i do not know why the pdf got smaller in size(around its original size) and had all of its pages blank. This could be the fault of freezing up of the PC or an okular bug. I have no idea. Maybe if there's a way to debug okular so that i can see what happens when i click Ctrl+S , that can shed some light on this. Is there a way to use okular from command line. I know that i can use the command okular somedpdf.pdf to open the pdf in okular.But this command does not give much info about what happens when i click Ctrl+S. -- You are receiving this mail because: You are the assignee for the bug.