Selected edges not being drawn

[micheus]

If I start from a cube (where I can't see highlighted edges) and connect two corners so that there is at least one triangle, I can see my highlighted edges again.

So it takes a very specific set of circumstances (an object with no triangular faces) to make the edges disappear.

No. That can't be a workaround because it's not a rule. I have a PC with an on board video card (Intel GMA HD). That is what happens for me (click in the picture to enlarge it):

That really bothering me too, but I just get this bug in the PC with Intel "GPU".

Would you give us some information about your video card?
I would appreciate if you could use the GPU Caps Viewer as I've asked other users in these posts and share some deep information about it:
- Face Select Problem
- Faces selected but not highlighted
Added to your report, that sounds like different sides of the same issue.

Thanks.