Testing Ionic 4 - Tabs project - 'ion-navbar' is not a known element

[peterennis]

Description:
'ion-navbar' is not a known element

Steps to Reproduce:
Tabs project. Add color="primary" to ion-navbar

Output:

My ionic info:

C:\ae\adaept.com\aetabs>ionic info
cli packages: (C:\Users\peter\AppData\Roaming\npm\node_modules)

   @ionic/cli-utils  : 2.0.0-rc.5
   ionic (Ionic CLI) : 4.0.0-rc.5

global packages:

   cordova (Cordova CLI) : 8.0.0

local packages:

   @angular-devkit/core       : 0.5.7
   @angular-devkit/schematics : 0.5.7
   @angular/cli               : 6.0.0-rc.5
   @ionic/schematics-angular  : 1.0.0-rc.5
   Cordova Platforms          : none
   Ionic Framework            : @ionic/angular 4.0.0-alpha.2

System:

   NodeJS : v8.11.1
   npm    : 5.8.0
   OS     : Windows 10

Environment Variables:

   ANDROID_HOME : not set


C:\ae\adaept.com\aetabs>

Other Information:

[peterennis]

Replace ion-navbar with ion-toolbar

[imhoffd]

@peterennis Yep, I made an internal note to add that to our breaking changes document: https://github.com/ionic-team/ionic/blob/master/angular/BREAKING.md

Thanks for bringing it to our attention.