iOS 26 SwiftUI Liquid Glass toolbar animation only plays when switching state rapidly

Based on the fact that the animation is shown sometimes, I believe this behaviour is unintentional.

One workaround is to remove the switch statement so that both views are alive at the same time, and use opacity to show/hide each tab. This has the additional (and usually desirable) effect of maintaining the view state between switching tabs.

ZStack { Text("Tab 1") .opacity(tab == .tab1 ? 1 : 0) .toolbar { if tab == .tab1 { ToolbarItem(placement: .topBarLeading) { Button("Tab 1 Button", systemImage: "person") { } } } } Text("Tab 2") .opacity(tab == .tab2 ? 1 : 0) .toolbar { if tab == .tab2 { ToolbarItem(placement: .topBarLeading) { Button("Tab 2 Button", systemImage: "plus") { } } ToolbarItem(placement: .topBarLeading) { Button("Tab 2 Button", systemImage: "trash") { } } } } }

Alternatively, you can merge the two .toolbar { ... } (and remove them from the Texts) and put it on ZStack instead,

ZStack { // ... } .toolbar { switch tab { case .tab1: ToolbarItem(placement: .topBarLeading) { Button("Tab 1 Button", systemImage: "person") { } } ToolbarItem(placement: .topBarLeading) { Button("Tab 2 Button", systemImage: "plus") { } } case .tab2: ToolbarItem(placement: .topBarLeading) { Button("Tab 2 Button", systemImage: "trash") { } } } }