There is still a very annoying note stuck-on bug when the arpeggiator is in chord mode.
On Ti1:
1. Go to patch ROM-L 76 "MoonArp XM"
2. Play the intro to "Where the streets have no name" by holding C3 and playing C6, G5, F5, E5, F5, G5 repeatedly.
Almost immediately you should hear a note stick on. Its possible to do it also by just holding C3 and tapping C6 at the right moment.
Another thing I find a bit annoying is that normally the Value 3/Program knob is pretty high resolution but when trying to select a program in the Edit Multi menu it often jumps 2-3 patches at a time even when you move it very slowly so you can sometimes only choose the patch you want using the Patch +/- buttons.
Overall though the OS updates are getting better