@Justin -- good catch. The tracks have two instances of RX plugins, but the items themselves have no effects on them, they are just named RX (for me to know that i ran them through RX before).
I reproduced the same behaviour without any plugins, just 1 empty track and empty midi items. Youtube video shows it much better than those old gifs
Thanks for suggestions everybody. Those are good workarounds. Still gonna to stay on 5.70 for now though