[SOLVED] Why would Shruthi and Ambika respond to B07B00 by switching to Patch 123?

I’m trying to use Shruthi and Ambika with a TheoryBoard controller, but when the TB apparently sends CC 123 “All Notes Off” B07B00, both Shruthi and Ambika respond by switching to Patch 123 – my Novation Peak does too, which makes me think it’s somehow a malformed MIDI message.

Does anyone know what might be causing this? Is B07B00 not valid?

It was a bug with the controller firmware – it was sending Program Change 123 over the DIN MIDI port, but I was inspecting the MIDI messages via its USB MIDI port (which sent CC 123) so I didn’t see the error at first.