I usual run with two monitors, one open on Track View, the other on Console View. When saving a project with both views open, SONAR would remember to open both views when the project was re-opened.
This latest update to 2016.12 seems to have broken that.
Sonar now opens with just the TV and forgets the CV. This is with a brand new project, with no lenses or other tricks enabled.
No changes have been made to the computer or Windows 7 OS apart from update to 2016.12.
Has any one else experienced this behavior?
 
Cheers

Are these new projects created in 2016.11 or .12 ?
or they track templates from previous builds ?

The project was started in earlier Sonar, don't remember exact build, and now totally remixed in 12.
 
I should add, the original project was "saved as", and given a new name, then opened as a separate project.
The original project was showing the forgetful behavior only since 12.

Try to use Lens to your advantage.
Save your views by saving it as a Lens preset. then save your project.
Re-open and you should see the same view.

I haven't had any trouble with projects opening up with the CV in the secondary monitor, and I'm using 2016.12.

i also use dual monitors in the same fashion as the op, no problems with opening projects with console view on 2nd monitor here.

Oops, Sorry, my bad.
After some more checking I did discover that Lenses dialog box was set to Advanced.
I don't recall previously changing it. Maybe it's the default. Anyway, reset to None and all is good now.
Have to get my head around all these new features.
Cheers
W