Ion back button not showing in rc0 - rc2

Bug Report

Ionic version: [x] 4.8.0

Current behavior: Since rc0 my ion-back-buttons stopped showing up. I’ve created a new project and added a back button, but there it doesn’t show up either.

Expected behavior: For the ion-back-button to show up (and work) when used.

Steps to reproduce:

Running the following project: repo And navigating to the testpage, the back button won’t show up even though it should.

Related code:

<ion-header>
  <ion-toolbar>
    <ion-buttons slot="start">
      <ion-back-button class="back-button"></ion-back-button>
    </ion-buttons>
    <ion-title>test</ion-title>
  </ion-toolbar>
</ion-header>

Other information: I haven’t seen anyone else with this issue. I’ve already asked on the ionic slack but no one had the same issue.

Ionic info:

Ionic:

   ionic (Ionic CLI)             : 4.8.0 (/usr/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 4.0.0-rc.1
   @angular-devkit/build-angular : 0.11.4
   @angular-devkit/schematics    : 7.1.4
   @angular/cli                  : 7.1.4
   @ionic/angular-toolkit        : 1.2.2

System:

   NodeJS : v8.15.0 (/usr/bin/node)
   npm    : 6.4.1
   OS     : Linux 4.15

[paulstelzer]

Thanks for the issue! Please keep in mind to add a defaultHref, if you want a back button everytime a user visits this page. Otherwise a back button will only be shown if you pushed (navigate forward) a new page

[nathantaal]

<ion-header>
  <ion-toolbar>
    <ion-title>Hide specific cards from deck</ion-title>
    <ion-buttons slot="start">
      <ion-back-button  defaultHref="/tabs/(settings:settings)"></ion-back-button>
    </ion-buttons>
  </ion-toolbar>
</ion-header>

this is working for me on rc0, rc1 and rc2