This is bit of a strange one and I thought it was just me not clicking the mouse correctly but after a closer look I've noticed the pitch bend minus button does not work always work correctly in the Performance mode when clicked with a mouse. The pitch bend plus button oddly works fine.
The majority of the time clicking on the pitch pend minus button has no effect. I need to be super precise on where I click in the GUI. The closer to the inner edge of the grey circle works but clicking on the middle to outer portion has no effect. It's as if the button is misaligned and not receiving the mouse click.
It probably sounds like a trivial issue but I use it a lot for practicing mixes when no hardware is connected. It would be nice to get a fix especially if it is just a control alignment issue.