Can't see midi in PRV until TV folders are open.

I like to add synths from synth rack using the "Synth Track Folder" option checked where it puts the synth and midi track into a folder when inserted into the project. I have to open the folders to see the midi track in PRV in 2017.4 I did not have to do that in previous versions with the track picker.
 
So now I have to go back and forth between track view and PRV opening and closing track folders in order to edit midi in the PRV.
Is this a bug?

Tracks hidden using the Track View Track Manager also will not appear in the PRV.
 
There are 2 additional users in addition to myself posting reports of the same behavior since the release of SONAR [2017.04]:
http://forum.cakewalk.com/FindPost/3598682
 
http://forum.cakewalk.com/FindPost/3601466
 
http://forum.cakewalk.com/FindPost/3601627
 
I contacted customer support and sent them the contents of my post.  This is the response I got, which doesn't seem to answer my question about whether this new behavior is by design or not:
 
"Thank you for getting in touch with Cakewalk support. I’ll be happy to assist you.
Both PRV Track pane and Track view can be a selector of the PRV view focus. this gives you flexibility if you are using 2 monitors and place PRV in one of them."

http://www.cakewalk.com/Support/Contact/Problem-Report
 

Anderton
I doubt that's a bug...if you want a track hidden, you probably want it hidden wherever it might appear.

Not even in my wildest nightmare!
Track view and PRV are totally different view setups in all of my projects once they get up and running.
I have no reason to see midi tracks in TV when the project is well under way and only want to see audio tracks in TV.
Then I want to see the midi tracks, that are feeding those audio tracks in PRV and only those.

I never record midi in TV unless it's the simplest little doodle in a 2 track project, and even then I'll switch to PRV to record if it gets interesting and serious.

If this is intended behavior then all I can say is OMG! ... and sticking with 2017.01 until things change.

And then an other scenario is needing to move clips around in TV and only having one midi track showing but having 20 or more in PRV and wanting to switch back and forth quickly just typing D.

I can think of plenty or reasons why this is a terrible idea.

I've come to isolate sections by screenset (all locked except for [1] after a day or so into the project)

[1] Everything in TV + All midi in PRV and all tracks and busses in Console.
This is where I'll copy and move clips or do any midi clip editing.

[2] Strings (16 or more tracks) ***but only Audio in TV, midi in PRV and only those tracks and buss in console
[3] Brass (6 to 8 tracks) ***same
[4] WWinds (14 or more tracks) ***same
[5] Percussion (16 tracks) ***same
[6,7,8,9] - what ever seems to be needed on the fly ... duplicates of smaller string sections etc.
[0] "The Loading Dock" - where all instance of Kontakt are open and visible along with any other VSTi so I can
watch them load before I start hitting the space bar.

No problem knowing where I'm at in PRV. I mark the arrangement with markers and *always* record midi in PRV,
and always Sound on Sound and *never* comping.

So, I've very used to a complex detailed layout and would suffer if simplicity is introduced at the expence of lost functionality.
No big deal at this point. 2017.01 is great for me.

It would be nice, to get the new good stuff, and not loose any of the old power.

Anderton
I don't remember...if you hide a track in 2017.01 TV does it not hide in the PRV?

Nope.
Prv is the same in 2017.01 as it is all the way back to X3 except for the controller lane enhancements.
The simplicity dumb down began at 2017.03.

Anderton
Hard to believe the changes to the PRV are intended to dumb it down...seems like a lot of functionality was added.

Sure, not intended.
Yes, good things added, but some old reliable functionality and flexibility was lost.