This bug has been here for a long time and according tothis thread should have been fixed , but it’s now broken again .
Perhaps it was fixed for vst’s and never for midi …who knows
-Create a midi out instr in slot 1going to midi channel 1
-Create second instrument in slot 2 going to midi channel 2
-create a third instrument in slot 3 ,going to midi channel 3
Like this
Now swap places for instrument 2-3 , result is that midi channel 3 ( now in instrument slot 2 ) is not responsive anymore
Re-arrangin doesn’t solve the issue , we need to reconnect the mid output port .
It’s an annoying bug .