https://bugs.kde.org/show_bug.cgi?id=389947
Bug ID: 389947 Summary: touchpad scrolling: Okular jumps several lines down first when scrolling after the cursor moves out and back again Product: okular Version: 1.3.1 Platform: Archlinux Packages OS: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: general Assignee: okular-de...@kde.org Reporter: renyune...@gmail.com Target Milestone: --- Created attachment 110368 --> https://bugs.kde.org/attachment.cgi?id=110368&action=edit Desmonstrative screen recording When scrolling in okular, it normally goes well. However, the only (annoying) exception is that when I scroll using my touchpad, sometimes okular jumps "randomly" first and then it scrolls normalls from where it has jumped to. After some observation and experienment, I have pinned down the situation where this happens and the behaviour: 0. It only happens when I'm using touchpad to scroll, and only in okular (as far as I have observed); 1. It only happens when my cursor moves from outside of okular application frame (e.g. move to title bar, or a kde panel, or another application) to inside of okular application frame; The toolbar is considered as "inside"; 2. The "randomly" jumping isn't really random: it is always "several lines" "down" (about half a page in most documents); 3. The jumping happens immediately (without annimation); 4. After the jump, okular scrolls normally at the position where it has jumped to. Sometimes, okular continues jumping even after the first jump and the cursor is not moved outside of okular. Closing okular can "solve" this problem. The attachment is a screen recording of this problem. Watch the cursor and the left "thumbnail" view in okular. -- You are receiving this mail because: You are watching all bug changes.