Nuendo 5.1.1 Windows 7 Pro 64
updated recently, only noticed this last night, clicking Zoom Tracks Full no longer results in evenly resized tracks.
Try this:
new project, add 16 tracks, resize a few manually, to different heights, use zoom slider to zoom in, then click Zoom tracks full.
Just checked this on N4 and it works perfectly, why is it now screwy?