I can't make any use of the multichannel option. It seems like Ableton doesn't recognize this plugin as a multichannel one.
When I'm trying to route the output of a drum track to another track where O-M-S is inserted, there's no way to choose O-M-S input channel in the "Audio to" part of the drum track - there's only "Track In" option and I can't change it.
Is it a bug or am I doing something wrong when routing?
Besides that the O-M-S works fine

