Yes, there was an update. I removed a few shaders that I didn’t think were working and added a few more.
I also added a radomise to visualisation settings (‘v’ key when playing music).
The randomise is not quite working (sometimes you get an extra visualisation change at start of song), but the API makes it really difficult to implement. The visualisation gets closed and opened quite often (e.g. when switching to full screen or moving between menu screens) so it’s very hard to know when to switch to a new random visualisation (e.g. on track change) but not when navigating the GUI.
Anyway, I have no gaps. I suspect you are either using a non 16:9 resolution or you have calibrated the GUI such that the used resolution is no longer 16:9. I’ll see if I can reproduce.