I've just installed karmin on a virtual machine. I was able to reproduce the problem.
At first sight it seems a bug in Qt, sometimes QCursor::pos() returns a different position of the mouse cursor even if it didn't move. -- A mouse pointer keeps reappearing during video playback in smplayer https://bugs.launchpad.net/bugs/455073 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs