weather splitting the end of fade off is normal or not.
maybe something in the code has changed to prep for ripple editing (im just guessing)
but even if it did, this isn't a show stopper, just grab the clip from the same place you grabbing it from only be aware of that clip line in the clips header.
I was able to produce the same thing, but again this is because you are actually highlighting the clip underneath and grabbing on the wrong side of the line in the clip header. not only could I produce the same thing, I saw the same thing in your video.
 
just try this again and drag it but only drag it from the right side of the line, not the left side.
its not going to curb your work habits, your simply moving your mouse over less that 1 inch.
 
When you overlap clips, there is a translucent effect that helps us see the clips border (under the other clip)
that's what I mean by grabbing to the right of this line. (grab the clip on the right, not the one under/on the left.
 
This isn't random strangeness, its all about selection. Sorry for your problems :-)
I hope this gets you back to making great music.

chuckebaby
your grabbing the clips in the wrong spot mate.
Try doing the exact same thing you are doing but be aware of the clip line (at the top of the clip)
Only grab it (to move) by clicking on the right side of that line. Sonar is thinking you want to grab the selected part underneath.

Chuck:
Could you explain a bit more what you mean about the "clip line" and being on the wrong or right side.  I'm not at my studio computer, wasn't aware location might matter, and couldn't see anything in the video to give a hint about your comment.  
 
Thanks,
 
Steve
 

SMcNamara

chuckebaby
your grabbing the clips in the wrong spot mate.
Try doing the exact same thing you are doing but be aware of the clip line (at the top of the clip)
Only grab it (to move) by clicking on the right side of that line. Sonar is thinking you want to grab the selected part underneath.

Chuck:
Could you explain a bit more what you mean about the "clip line" and being on the wrong or right side.  I'm not at my studio computer, wasn't aware location might matter, and couldn't see anything in the video to give a hint about your comment.  
 
Thanks,
 
Steve
 

im not going to write a whole chapter on this.
my apology's if I seem ignorant, its just I've explained this way too much already.
 
I will offer this...
Watch closely @ exactly 0:57 seconds. Watch real close where he is grabbing the clip.
and what happens ? "It works Perfect" correct ?
 
you know would be helpful ?
A- he removed his Cakewalk Serial number or deleted this video
B- he slowed down a little bit. I find the movements on the video to be going 1000MPH.
 

I see where he is grabbing it at 0:57
But right now I cannot reproduce it no matter where I grab it.
Left, right or middle. Nothing unexpected happening.

I am assuming the "clip line" means where the overlap occurs, i.e. dragging by gabbing the overlapped portion causes the split, grabbing the non-overlapped portion does not.

chuckebaby
weather splitting the end of fade off is normal or not.
maybe something in the code has changed to prep for ripple editing (im just guessing)
but even if it did, this isn't a show stopper, just grab the clip from the same place you grabbing it from only be aware of that clip line in the clips header.
I was able to produce the same thing, but again this is because you are actually highlighting the clip underneath and grabbing on the wrong side of the line in the clip header. not only could I produce the same thing, I saw the same thing in your video.
 
just try this again and drag it but only drag it from the right side of the line, not the left side.
its not going to curb your work habits, your simply moving your mouse over less that 1 inch.
 
When you overlap clips, there is a translucent effect that helps us see the clips border (under the other clip)
that's what I mean by grabbing to the right of this line. (grab the clip on the right, not the one under/on the left.
 
This isn't random strangeness, its all about selection. Sorry for your problems :-)
I hope this gets you back to making great music.

That's the issue is that I AM selecting from the same place. And the issue isn't occurring where you say it is it rather at 1:07. That's where the issue starts. And I have followed closely doing the same thing and cannot reproduce it now.

I do extensive clip movements and not had this issue before. I've been using Cakewalk/Sonar since The came out on floppies.

This is not a frivolous or carelessly noted issue. And yes, when it does happen it *is* a showstopper for me

Well, I think we finally have some concrete proof in the form of the video, even if not quite perfect.
VariousArtist, would you object if I post this to the Problem Reports forum?
Or would you like to do the honors?
It's your video...

Late to the party, and haven't read through the whole thread in detail, but I reported an issue a while back with clip fades being split off as separate clips when increasing overlap in a lane with a crossfade that was created automatically by the Comp tool (as opposed to moving clips into overlap in the parent track with lanes not showing). This was 100% reproducible in 2016.8.
 
In general, it seems best to avoid mixing Comping workflow with manually splitting, cross-fading and moving clips around. Comping logic depends on comped sections in different lanes remaining in alignment. If it's necessary to reposition something, finish comping together the best parts of the different takes first, then flatten the comp and make any manual splits and moves to the flattened comp.
 

Note that for 2017.02 we adjusted the hit zones for the comping tools.  They are now a bit more clearly delineated by the mid point line in a stereo clip or the -inf line of a mono audio clip.  Below the line is comping tools, above, selection/etc., caption area of clip is still where you move the clip.
 
Further there were some cursor issues that we also fixed.  In particular when the Help Module was open the cursor would sometimes revert to the normal cursor which could be misleading.
 
Try it out in the update and let us know how it works for you now.
 
Keith

I also experienced this issue when two audio clips overlap in one track and wanting only to move one independently.  The problem was the overlapping portions in 2nd clip were getting selected too.  Cause was the two clips were in same Clip Selection Group.  
 
To remove a clip from the group, select the individual clip and click in following: 
[Track view] Clips > Remove from Clip Selection Group
 
After this, the individual clip can be moved without duplicating the overlapping portion(s) and taking them along.