Ouch, that's mean. Pretty sure it would count as a bug. Does it still happen in X2?
What I was up to in my previous post was that restrictions, problems and issues are not inherent to the concept of one-track MIDI instruments. Provided they are used for monotimbral instruments when only a single output is needed (which is what the concept is all about). If there are some, it's an issue with how the feature is realized. I just don't agree with the notion in Bit's post that the people who were requesting it were just whining Fruity heads with some weird idea and that the concept as such is inherently inferior. I rather assume they were just hoping Cakewalk would do it right.
Apparently, if the problem reports are referring to X2, there seem to be enough reasons to not use them in Sonar, as things stand. IMO (as always) that would be a motive to request bringing them up to snuff, not dismiss the concept right away. Done right they could be a very intuitive, straightforward way to deal with that family of instruments. Easy to use, less screen space and you'd be able to do everything you can do with a single channel of a multitimbral, just the overhead that only multitimbral instruments need being taken away.