When clicking on an item under Applications in Kickoff and then moving the mouse it seems to activate the current item under the mouse instead of the clicked one.
Makes it very hard to navigate as it seems the clicking is delayed so the mouse needs to rest until the animation starts.

Video demo: http://youtu.be/uG_nfihld98

Thanks for the video! Would you mind also filing a bug on bugs.kde.org with this link?

There is already bug report for that, reopening..

https://bugs.kde.org/show_bug.cgi?id=332808