Please post your observed issues you have with using Sonar..
Not feature requests but Issues and Bugs. Things that cause you problems while trying to work with the Software. 
 
I think the new owners are listening right now and we are the ones who can make a difference to the future of the "new DAW' 

1- Crashing after so many midi edits unless you keep saving
2- Setting that do not stay put and have to always be reset every time you start a new project. Example - Opening a midi file to make a new project. The  Lens is ignored and you have to re arrange your pages,
3-The export setting do not stay as you set them. Everytime you export you have to make changes. ( see# 7 )  
4-Bugs in the track templates that will randomly insert a new Master buss. I'm never sure what will be part of a saved template. 
5-Automation can make a huge mess of things and needs a complete overhaul 
6- COPY/ PASTE of even the simplest midi track results in random weirdness that cannot be explained.  
7- User preferences should be set in stone and we should not have to keep resetting settings like Comping. I don't use comping yet it keeps being reset to this and I keep having to change it back to Overdub. There are many more settings that we should be able to set in preferences once and forget. There are many setting that should be but are not included in preferences, like the Export settings.  
 

If new owners have access to CW bugtracker, I guess they know the complete list already...

Plugins having their controls reset both when the project loads and during working on the project. Huge issue for me which was the #1 reason why I jumped ship. This was a very long standing issue with Sonar in many guises, but most recently affected Waves and Fabfilter EQ's for me. Made the program completely useless. 
 
Also horrible instability in large projects which caused the program to hang and sometimes crash when I did something as innocuous as click the playhead to another part of the project and hit play. 

Having taken advantage of the Studio One offer over christmas so I can take a valid reality check - what really has come into focus is how often I accepted Sonar crashes, and the biggest of all was the weird mis-alignment problems I had when loop recording.  I still am puzzled that I seemed to be the only win 8/steinberg UR44/SPLAT owner who had those problems but there you go..... S1.3 doesn't give me that grief.

Crashing

- Track mis-alignment when changing the range during playback
- Crashes using Melodyne when not saving in short periods
- Copy/paste to track lanes goes to wrong lane (not the selected one)

- disk overrun error appears in situation related to application memory management not really disk related for instance in such weird cases like even after finishing playing project (not recording!). It happens with very simple project like 3-4 tracks, 2x VSTi (like drums+bas). Just recording next versions of audio (even not in lanes, just delete old and start new one)
- adding more and more plugins during play often leads to hanging of Sona
- often in history there was showed not proper name of actual operation to be undo/redo
 

mixmkr
 
Crashing

 
Well that narrows it down.

marled
 
-Track mis-alignment when changing the range during playback

+1
 
Changing the range during playback when using a Region FX causes a whole unsynchronized/mis-aligned mess here (Using 10.2017).
Data appears to float off up to 1 beat (MBT=Measures/Beats/Ticks ) at times.
 

I sure there was mention of new code. New flagship so this post is really irrelevant.