When you are trying to do this, are you sync'd to Ableton? Because I'm also experiencing the same behavior, but only when sync'd to Cubase. When I power the unit on stand-alone, programming ties, gate values, slides all work as expected. But then as soon as I turn on Cubase and 2S gets synced with it, all those things seem to be ignored. The same previous sequence plays with the correct pitches, but all the notes are just straight 16ths, so previously indicated ties/gates/slides are ignored, even though all the values are still present.
Can anyone else who syncs with a DAW try to reproduce this, pretty please?