I think I've found a way to trigger this - try scrolling while holding alt. After this, scrolling wont work in any window. To unblock scrolling just press alt again.
So most likely this has nothing to do with touchpad scroll. Unfortunately I have no way to test this with a mouse now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1689020 Title: Touchpad edge scroll stops working randomly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kwin/+bug/1689020/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
