Since the latest update I have been experimenting a weird bug. When I insert a Vi, Cakewalk doesn't show his individual track and I have to use an additional MIDI track:
https://imgur.com/a/DA2GaVN
That is a shame.

on the track-menu
 

If you open the synth rack, you might need to adjust your "insert soft synth options". This area allows you to choose which tracks are included when you add a new soft synth.

martins guit
on the track-menu
 

Not at all, the instrument track is created and showing on the console but it doesn't appear on the track view.
https://i.imgur.com/ig83XsE.png

Jon Sasor [Cakewalk]
If you open the synth rack, you might need to adjust your "insert soft synth options". This area allows you to choose which tracks are included when you add a new soft synth.

Those are my settings https://i.imgur.com/d20E9c4.png
I can insert a Vi in work in progress projects (started on previous versions), but i have this bug with new projects.
Edit: showing on work in progress projects https://imgur.com/a/Cv1IPPG and here you can see this is actually a bug and it isn't a configuration problem https://i.imgur.com/Hl4h5Od.png
Edit 2: I have reinstalled Cakewalk via BA and the tracks are now visible. Thank you!

You probably toggled a Hide track option. When ever a track is missing check the track manager.

Few days later and the same problem has returned: 
https://imgur.com/a/fCd1wk4
I am on Windows 10 1809