When using tools such as
MoveEdge, v6 and WIP v7 do not display the selected edge if it is perpendicular to the view.
For example, in the standard 4 view set up, create a plane in the top view. If you then use
MoveEdge and select the front most edge, it will display in all views except the right view where it is entirely perpendicular to the view.
In v5 the highlighted edge would display. Since the earliest betas of v6 this has been missing. It is really important to be able to see highlighted geometry in all views. Not such an issue on a really basic example as shown in the video but when a model gets more complex, it is essential.
The video below should illustrate the issue.