I’m no longer counting the number of bugs currently present with VariAudio.
It interferes with AudioWarp, Musical Mode and resizing the Editor window.
However, most of those bugs are only occurring in the Lower Zone Editor, which is also the source of many other trouble, like this one.
So, the real issue (disappearing notes) does not come from VariAudio, but from the Lower Zone Editor itself, which causes serious graphical and performance issues with various functionalities. Period.