I cannot see any other edges other than the ones on the picture when in wireframe viewport. This was working properly until today and I am not sure if I accidentally turned off something or not because this happened suddenly. As you can see only 6 of the edges of the cube are possible to be seen (when at least 8, if I did not have X-Ray toggled, should be seen). I already tried to repair the installation, uninstall and reinstall and setting all the settings to the default ones. I then tried installing in another computer and it was working properly.