I just wanted to point out that this is exactly what has happened since you left. The simple fact that you don't see any users saying things like "Works only with XXX version of ZC" anymore I think proves this. :) In fact, I've been sorta semi-retired from general bug-fixing for some time due to the fact that it has remained stable. :)
The worst bugs currently (I believe) are from Windows 10 DirectX layer, Windows 10 drivers, and/or general Windows shenanigans. For example; someone said that ZC mega-lags unless they are playing a youtube video in the background. Stuff like this.