Our underlying system for voice allocation is quite complex and clever, but it also made portamento difficult to implement and had to be put on hold. But I hear you loud and clear and hope that we can bring you this soon. As always, can’t promise anything but it is high on our list of things to fix.
If you’re up for it, you can do slides manually with the use of an LFO though. I know it’s a tedious workaround, but at least it’s something.
I like to use a squarewave LFO on TRG mode, Speed set to 0.01 and Mult to 1 (no bpm sync) - this will make it so that the LFO is basically an offset/adder. Set destination to Pitch All.
To slide from a lower note, set fade to however long you want the slide to be, and depth to -n, or +n for slide from higher note. NOTE (heh) that Depth +1 is a semitone (iirc)
(And to do slides without triggering a note, like a 303 etc - put a trigless lock on the grid, use the Depth for whichever note you want to slide to and then lock LFO.T to On on the Trig page. (it needs to be locked even if it’s on by default, it causes the trigless to trigger the LFO)
Hope that’s at least a little bit helpful.