Definitely a XKB issue. It applies to Kubuntu, Ubuntu, Arch and Gentoo at the very least. Also making distro level patching very unlikely. Unless those three Xs have the same silly patch ;)
** Package changed: kde-workspace (Ubuntu) => xorg-server (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1245662 Title: Sticky Keys not released after mouse action. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1245662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs