I use multiple proxies and by switching between them when I want to know which proxy chrome's using right now I should move the mouse point on it and switchy! shows which one's using. If proxy switchy assign a number(or icon color)to each proxy and indicates that number( or change icon color) when using a proxy then there's no need to move mouse on icon to know browser's using which proxy :)

oh sorry it's not a bug! just a feature request