I have the same. Its the same with Arps too.
Ive also noted - at least on mine - that PB always sends clock out regardless of input settings - which is a PITA.
I hope its me.... as Its new to me BUT:
The Midi selection of Arp/Seq MIDI out - which I assumed would be the option (it if off no arp/midi notes and no clock - but if on they you get arp and seq generated note data transmitted along with clock) - doesnt appear to do anything. My PB behaves EXACTLY the same with it On or Off.... Always sends clock - never sends note data.
As Im recording Midi notes not audio - I get round this by filtering Command and clock at my midi routers input ( to stop the clock loop) and using internal sounds regardless of what Ill play back (as the it DOES send note data out). At lest I can work - but its a PITA to do it this way.