[ISSUE] Move To Front often does not work (see movie)

Often the Move To Front command does not function for me, while selecting the clip in front and choosing Move To Back does work. Frustrating while working on large sound design projects.

Please see example movie.
Mac 2.8 GHz Quad-Core Intel Xeon
Mac OS X Lion 10.7.5 (11G63)
Nuendo 6.0.5
Move to front not working-desktop.m4v (1.22 MB)

Can you repost the movie?