does it have several input buses that connect to the very same source? and one of them, not the last in create list order, has different gain, pan and/or any audio_fx plugins activated (in at least one of those input buses)?
then, for sure, you'll fall into what the OP called Abnormal_behavior_in_input_buses that we're trying to assess/fix and results might certainly differ between [main/develop] and [xcopyinbuf] builds.
not sure
does it have several input buses that connect to the very same source? and one of them, not the last in create list order, has different gain, pan and/or any audio_fx plugins activated (in at least one of those input buses)?
then, for sure, you'll fall into what the OP called Abnormal_behavior_in_input_buses that we're trying to assess/fix and results might certainly differ between [main/develop] and [xcopyinbuf] builds.
seeya