I’ve noticed a bug that appeared in 2.6 when editing a chord.
Go to “3. Chord” and click on one of the orange edit tags to edit the notes in the chord. Add or remove a note from the chord and then use the bound keyboard key to preview the chord. The notes that play back are not the chord and are random notes higher up the keyboard.
You can avoid this by clicking on any chord in the area at the bottom (where your chords are saved). From there you can use your keyboard to preview the chord you just edited.
Happens every time. I’m using Scaler 2.6 in Bitwig on an M1 Mac.