Bug: side chain inputs, not all of them visible, NI machine 2

When I’m loading Maschine 2 into Cubase 14 only Inputs 2-4 are visible!

  1. Loading Maschine 2 (latest version) into Instruments track
  2. activating side chain feature
  3. wants to use and generate first bus, but only 2-4 are in the list for an input selection

I really would appreciate, finding a solution to that.

macOS 13.7.1 - Maschine 2.18.4 - Cubase 14.0.10

edit: it is the same in Cubase 12