I was playing around in Explore and flipping between Suggestion and the Explore Circle. Eventually a few different things happened. After Selecting the Dm11 one set of options was offered. None of the pads played a sound. Switching to Tonal loaded a different chord set which did play for the Dm11. Switching back to Per Scale the chord set persisted but the Chord pads did not play.
Then i did a Detect on the last three chords of the progression. Again the chord recommendations all remained the same (could be expected behaviour) and would play if Tonal was selected but not if Per Scale was selected.
If I trigger any other chord, then return to the Dm11, a new set of chords is displayed but if Per Scale is then selected, no sound plays in the suggested chords. This bug was easily reproduced.
If I move from the Dm11 to the Idea Button all the pads show Rest, then trigger the Dm11 all the pads continue to show Rest. If I trigger any other chord, the pads are filled with chords.
@Steven I take that back. It happened today after playing around with ideas for 30 minutes or so. Here are two screen shots. In the screen, shot all chords in the Main Track generate Suggest chords but some of those chords are silent if Per Scale is selected. If I change to Tonal, the Suggest chords are exactly the same but all the Suggest chords have audible sound. In this case its only the A#m9 and the Fm that generate silent chords when Per Scale is selected. Side note: Minimize movement can be on or off without effect.
Ableton Live 12.3.2 / Scaler 3.2 / M2 Studio Sequoia