The 'async' in the accepted answer did it for me. I changed from context.performAndWait({ delete action }) to await context.perform({ delete action }). and this fixed it for me.

I had this issue after a change in the model. In my case, removing the app and re-installing did the trick.

EDIT: inconsistent results

The floating tab bar indeed doesn't respond to .tabBars. Checking is the code is being run on iPad with ipadOS 18, and using .buttons instead, worked for me, e.g.: var iOS18available = false if #available(iOS 18, *) { iOS18available = true } let isIPadIOS18 = iOS18available && UIDevice.current.model.lowercased().contains("ipad") let firstTab = isIPadIOS18 ? app.buttons["First tab button title"] : app.tabBars.buttons.element(boundBy: 0) firstTab.tap() Also see: https://developer.apple.com/forums/thread/759960