I've experienced this problem for a while now. Randomly, I'll open a PDF document, say via a text-based web browser, in Okular. I'll use "space" or the mouse wheel to navigate down the document. However, when I hit "delete" the keypress is ignored. Same with "pageup" and "pagedown" - ignored. But if I use the mouse and click on the document, then it fixes things and I can navigate with these keys again. Unfortunately I haven't found a way to reproduce this. It happens every day, but it may be dependent on a race condition or something because I can't make it happen on demand. Maybe I am doing a particular thing without realizing it, e.g. starting to type before the document comes up. Or maybe it only happens on new documents that Okular hasn't seen before. Usually when I open a document, all keys work for navigation at startup. I use the i3 window manager and the w3m web browser. I'm not sure if the bug is dependent on opening a document with w3m. I know this isn't much to go on but I wanted to submit here because I'm not making any progress on getting more information, and I thought maybe somebody familiar with the code of Okular could say what is happening. It seems that something is going on related to focus. Is there a focus state where Okular responds to "space" but not "delete" for navigation?
I realized on further observation that this seems related to Okular's on-demand loading of PDF data. Sometimes when Okular is open in a tab, I can cause it to enter a bad-focus state just by scrolling down in a recently-opened document. In other words, it'll be in a state where "space" and "delete" both work; then I press "space" several times and Okular pauses a second while loading the next page, and then I find that it no longer recognizes "delete" to scroll up... and I have to use the mouse button to restore focus. So you can probably ignore the information about my window manager, and certainly my web browser, in the initial report; the bug can be triggered entirely within Okular. By the way how do I get a list of bugs I've submitted? The "My Requests" link in the header doesn't show anything...
> By the way how do I get a list of bugs I've submitted? The "My Requests" link in the header doesn't show anything... Do you have a "My bugs" on the footer?
Yes indeed, that does the trick. Thank you. I must have missed it before.
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!